src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <ctype.h>
  33 #include <time.h>
  34 #if HAVE_LIBJCONV
  35 #  include <jconv.h>
  36 #endif
  37
  38 #include "intl.h"
  39 #include "imap.h"
  40 #include "socket.h"
  41 #include "ssl.h"
  42 #include "recv.h"
  43 #include "procmsg.h"
  44 #include "procheader.h"
  45 #include "folder.h"
  46 #include "statusbar.h"
  47 #include "prefs_account.h"
  48 #include "codeconv.h"
  49 #include "utils.h"
  50 #include "inputdialog.h"
  51
  52 #define IMAP4_PORT      143
  53 #if USE_SSL
  54 #define IMAPS_PORT      993
  55 #endif
  56
  57 #define QUOTE_IF_REQUIRED(out, str)                             \
  58 {                                                               \
  59         if (*str != '"' && strpbrk(str, " \t(){}%*") != NULL) { \
  60                 gchar *__tmp;                                   \
  61                 gint len;                                       \
  62                                                                 \
  63                 len = strlen(str) + 3;                          \
  64                 Xalloca(__tmp, len, return IMAP_ERROR);         \
  65                 g_snprintf(__tmp, len, "\"%s\"", str);          \
  66                 out = __tmp;                                    \
  67         } else {                                                \
  68                 Xstrdup_a(out, str, return IMAP_ERROR);         \
  69         }                                                       \
  70 }
  71
  72 static GList *session_list = NULL;
  73
  74 static gint imap_cmd_count = 0;
  75
  76 static void imap_folder_init            (Folder         *folder,
  77                                          const gchar    *name,
  78                                          const gchar    *path);
  79
  80 static IMAPSession *imap_session_get    (Folder         *folder);
  81
  82 static gint imap_scan_tree_recursive    (IMAPSession    *session,
  83                                          FolderItem     *item);
  84 static GSList *imap_parse_list          (IMAPSession    *session,
  85                                          const gchar    *real_path);
  86
  87 static void imap_create_missing_folders (Folder                 *folder);
  88 static FolderItem *imap_create_special_folder
  89                                         (Folder                 *folder,
  90                                          SpecialFolderItemType   stype,
  91                                          const gchar            *name);
  92
  93 static gint imap_do_copy                (Folder         *folder,
  94                                          FolderItem     *dest,
  95                                          MsgInfo        *msginfo,
  96                                          gboolean        remove_source);
  97 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
  98                                          FolderItem     *dest,
  99                                          GSList         *msglist,
 100                                          gboolean        remove_source);
 101
 102 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
 103                                                  FolderItem     *item,
 104                                                  guint32         first_uid,
 105                                                  guint32         last_uid);
 106 static GSList *imap_delete_cached_messages      (GSList         *mlist,
 107                                                  FolderItem     *item,
 108                                                  guint32         first_uid,
 109                                                  guint32         last_uid);
 110 static void imap_delete_all_cached_messages     (FolderItem     *item);
 111
 112 #if USE_SSL
 113 static SockInfo *imap_open              (const gchar    *server,
 114                                          gushort         port,
 115                                          gboolean        use_ssl);
 116 #else
 117 static SockInfo *imap_open              (const gchar    *server,
 118                                          gushort         port);
 119 #endif
 120
 121 static SockInfo *imap_open_tunnel(const gchar *server,
 122                                   const gchar *tunnelcmd);
 123
 124 static SockInfo *imap_init_sock(SockInfo *sock);
 125
 126 static gint imap_set_message_flags      (IMAPSession    *session,
 127                                          guint32         first_uid,
 128                                          guint32         last_uid,
 129                                          IMAPFlags       flag,
 130                                          gboolean        is_set);
 131 static gint imap_select                 (IMAPSession    *session,
 132                                          IMAPFolder     *folder,
 133                                          const gchar    *path,
 134                                          gint           *exists,
 135                                          gint           *recent,
 136                                          gint           *unseen,
 137                                          guint32        *uid_validity);
 138 static gint imap_get_uid                (IMAPSession    *session,
 139                                          gint            msgnum,
 140                                          guint32        *uid);
 141 static gint imap_status                 (IMAPSession    *session,
 142                                          IMAPFolder     *folder,
 143                                          const gchar    *path,
 144                                          gint           *messages,
 145                                          gint           *recent,
 146                                          guint32        *uid_next,
 147                                          guint32        *uid_validity,
 148                                          gint           *unseen);
 149
 150 static void imap_parse_namespace                (IMAPSession    *session,
 151                                                  IMAPFolder     *folder);
 152 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
 153                                                  const gchar    *path);
 154 static gchar imap_get_path_separator            (IMAPFolder     *folder,
 155                                                  const gchar    *path);
 156 static gchar *imap_get_real_path                (IMAPFolder     *folder,
 157                                                  const gchar    *path);
 158
 159 static gchar *imap_parse_atom           (SockInfo       *sock,
 160                                          gchar          *src,
 161                                          gchar          *dest,
 162                                          gint            dest_len,
 163                                          GString        *str);
 164 static gchar *imap_parse_one_address    (SockInfo       *sock,
 165                                          gchar          *start,
 166                                          gchar          *out_from_str,
 167                                          gchar          *out_fromname_str,
 168                                          GString        *str);
 169 static gchar *imap_parse_address        (SockInfo       *sock,
 170                                          gchar          *start,
 171                                          gchar         **out_from_str,
 172                                          gchar         **out_fromname_str,
 173                                          GString        *str);
 174 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 175 static MsgInfo *imap_parse_envelope     (SockInfo       *sock,
 176                                          GString        *line_str);
 177 static gint imap_greeting               (SockInfo *sock,
 178                                          gboolean *is_preauth);
 179
 180 /* low-level IMAP4rev1 commands */
 181 static gint imap_cmd_login      (SockInfo       *sock,
 182                                  const gchar    *user,
 183                                  const gchar    *pass);
 184 static gint imap_cmd_logout     (SockInfo       *sock);
 185 static gint imap_cmd_noop       (SockInfo       *sock);
 186 static gint imap_cmd_namespace  (SockInfo       *sock,
 187                                  gchar         **ns_str);
 188 static gint imap_cmd_list       (SockInfo       *sock,
 189                                  const gchar    *ref,
 190                                  const gchar    *mailbox,
 191                                  GPtrArray      *argbuf);
 192 static gint imap_cmd_do_select  (SockInfo       *sock,
 193                                  const gchar    *folder,
 194                                  gboolean        examine,
 195                                  gint           *exists,
 196                                  gint           *recent,
 197                                  gint           *unseen,
 198                                  guint32        *uid_validity);
 199 static gint imap_cmd_select     (SockInfo       *sock,
 200                                  const gchar    *folder,
 201                                  gint           *exists,
 202                                  gint           *recent,
 203                                  gint           *unseen,
 204                                  guint32        *uid_validity);
 205 static gint imap_cmd_examine    (SockInfo       *sock,
 206                                  const gchar    *folder,
 207                                  gint           *exists,
 208                                  gint           *recent,
 209                                  gint           *unseen,
 210                                  guint32        *uid_validity);
 211 static gint imap_cmd_create     (SockInfo       *sock,
 212                                  const gchar    *folder);
 213 static gint imap_cmd_rename     (SockInfo       *sock,
 214                                  const gchar    *oldfolder,
 215                                  const gchar    *newfolder);
 216 static gint imap_cmd_delete     (SockInfo       *sock,
 217                                  const gchar    *folder);
 218 static gint imap_cmd_envelope   (SockInfo       *sock,
 219                                  guint32         first_uid,
 220                                  guint32         last_uid);
 221 #if 0
 222 static gint imap_cmd_search     (SockInfo       *sock,
 223                                  GSList         *numlist);
 224 #endif
 225 static gint imap_cmd_fetch      (SockInfo       *sock,
 226                                  guint32         uid,
 227                                  const gchar    *filename);
 228 static gint imap_cmd_append     (SockInfo       *sock,
 229                                  const gchar    *destfolder,
 230                                  const gchar    *file);
 231 static gint imap_cmd_copy       (SockInfo       *sock,
 232                                  guint32         uid,
 233                                  const gchar    *destfolder);
 234 static gint imap_cmd_store      (SockInfo       *sock,
 235                                  guint32         first_uid,
 236                                  guint32         last_uid,
 237                                  gchar          *sub_cmd);
 238 static gint imap_cmd_expunge    (SockInfo       *sock);
 239
 240 static gint imap_cmd_ok         (SockInfo       *sock,
 241                                  GPtrArray      *argbuf);
 242 static void imap_cmd_gen_send   (SockInfo       *sock,
 243                                  const gchar    *format, ...);
 244 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 245                                  gchar          *buf,
 246                                  gint            size);
 247
 248 /* misc utility functions */
 249 static gchar *strchr_cpy                        (const gchar    *src,
 250                                                  gchar           ch,
 251                                                  gchar          *dest,
 252                                                  gint            len);
 253 static gchar *get_quoted                        (const gchar    *src,
 254                                                  gchar           ch,
 255                                                  gchar          *dest,
 256                                                  gint            len);
 257 static gchar *search_array_contain_str          (GPtrArray      *array,
 258                                                  gchar          *str);
 259 static gchar *search_array_str                  (GPtrArray      *array,
 260                                                  gchar          *str);
 261 static gchar *search_array_starts               (GPtrArray *array,
 262                                                  const gchar *str);
 263 static void imap_path_separator_subst           (gchar          *str,
 264                                                  gchar           separator);
 265
 266 static gchar *imap_modified_utf7_to_locale      (const gchar    *mutf7_str);
 267 static gchar *imap_locale_to_modified_utf7      (const gchar    *from);
 268
 269 static gboolean imap_rename_folder_func         (GNode          *node,
 270                                                  gpointer        data);
 271
 272
 273 Folder *imap_folder_new(const gchar *name, const gchar *path)
 274 {
 275         Folder *folder;
 276
 277         folder = (Folder *)g_new0(IMAPFolder, 1);
 278         imap_folder_init(folder, name, path);
 279
 280         return folder;
 281 }
 282
 283 void imap_folder_destroy(IMAPFolder *folder)
 284 {
 285         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 286 }
 287
 288 static void imap_folder_init(Folder *folder, const gchar *name,
 289                              const gchar *path)
 290 {
 291         folder_remote_folder_init(folder, name, path);
 292
 293         folder->type = F_IMAP;
 294
 295         folder->get_msg_list        = imap_get_msg_list;
 296         folder->fetch_msg           = imap_fetch_msg;
 297         folder->add_msg             = imap_add_msg;
 298         folder->move_msg            = imap_move_msg;
 299         folder->move_msgs_with_dest = imap_move_msgs_with_dest;
 300         folder->copy_msg            = imap_copy_msg;
 301         folder->copy_msgs_with_dest = imap_copy_msgs_with_dest;
 302         folder->remove_msg          = imap_remove_msg;
 303         folder->remove_all_msg      = imap_remove_all_msg;
 304         folder->is_msg_changed      = imap_is_msg_changed;
 305         folder->scan                = imap_scan_folder;
 306         folder->scan_tree           = imap_scan_tree;
 307         folder->create_tree         = imap_create_tree;
 308         folder->create_folder       = imap_create_folder;
 309         folder->rename_folder       = imap_rename_folder;
 310         folder->remove_folder       = imap_remove_folder;
 311 }
 312
 313 static IMAPSession *imap_session_get(Folder *folder)
 314 {
 315         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 316         gushort port;
 317
 318         g_return_val_if_fail(folder != NULL, NULL);
 319         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 320         g_return_val_if_fail(folder->account != NULL, NULL);
 321
 322 #if USE_SSL
 323         port = folder->account->set_imapport ? folder->account->imapport
 324                 : folder->account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
 325 #else
 326         port = folder->account->set_imapport ? folder->account->imapport
 327                 : IMAP4_PORT;
 328 #endif
 329
 330         if (!rfolder->session) {
 331                 rfolder->session =
 332                         imap_session_new(folder->account);
 333                 if (rfolder->session) {
 334                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 335                                              IMAP_FOLDER(folder));
 336                         rfolder->session->last_access_time = time(NULL);
 337                 }
 338                 statusbar_pop_all();
 339                 return IMAP_SESSION(rfolder->session);
 340         }
 341
 342         /* I think the point of this code is to avoid sending a
 343          * keepalive if we've used the session recently and therefore
 344          * think it's still alive.  Unfortunately, most of the code
 345          * does not yet check for errors on the socket, and so if the
 346          * connection drops we don't notice until the timeout expires.
 347          * A better solution than sending a NOOP every time would be
 348          * for every command to be prepared to retry until it is
 349          * successfully sent. -- mbp */
 350         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 351                 rfolder->session->last_access_time = time(NULL);
 352                 statusbar_pop_all();
 353                 return IMAP_SESSION(rfolder->session);
 354         }
 355
 356         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 357                 log_warning(_("IMAP4 connection to %s:%d has been"
 358                               " disconnected. Reconnecting...\n"),
 359                             folder->account->recv_server, port);
 360                 session_destroy(rfolder->session);
 361                 rfolder->session =
 362                         imap_session_new(folder->account);
 363                 if (rfolder->session)
 364                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 365                                              IMAP_FOLDER(folder));
 366         }
 367
 368         if (rfolder->session)
 369                 rfolder->session->last_access_time = time(NULL);
 370         statusbar_pop_all();
 371         return IMAP_SESSION(rfolder->session);
 372 }
 373
 374 Session *imap_session_new(const PrefsAccount *account)
 375 {
 376         IMAPSession *session;
 377         SockInfo *imap_sock;
 378         gushort port;
 379         gchar *pass;
 380         gboolean is_preauth;
 381
 382 #ifdef USE_SSL
 383         /* FIXME: IMAP over SSL only... */
 384         gboolean use_ssl;
 385
 386         port = account->set_imapport ? account->imapport
 387                 : account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
 388         use_ssl = account->ssl_imap ? TRUE : FALSE;
 389 #else
 390         port = account->set_imapport ? account->imapport
 391                 : IMAP4_PORT;
 392 #endif
 393
 394         if (account->set_tunnelcmd) {
 395                 log_message(_("creating tunneled IMAP4 connection\n"));
 396                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 397                                                   account->tunnelcmd)) == NULL)
 398                         return NULL;
 399         } else {
 400                 g_return_val_if_fail(account->recv_server != NULL, NULL);
 401
 402                 log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 403                             account->recv_server, port);
 404
 405 #if USE_SSL
 406                 if ((imap_sock = imap_open(account->recv_server, port,
 407                                            use_ssl)) == NULL)
 408 #else
 409                 if ((imap_sock = imap_open(account->recv_server, port)) == NULL)
 410 #endif
 411                         return NULL;
 412         }
 413
 414         /* Only need to log in if the connection was not PREAUTH */
 415         imap_greeting(imap_sock, &is_preauth);
 416         log_message("IMAP connection is %s-authenticated\n",
 417                     (is_preauth) ? "pre" : "un");
 418         if (!is_preauth) {
 419                 g_return_val_if_fail(account->userid != NULL, NULL);
 420
 421                 pass = account->passwd;
 422                 if (!pass) {
 423                         gchar *tmp_pass;
 424                         tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
 425                         if (!tmp_pass)
 426                                 return NULL;
 427                         Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return NULL;});
 428                         g_free(tmp_pass);
 429                 }
 430
 431                 if (imap_cmd_login(imap_sock, account->userid, pass) != IMAP_SUCCESS) {
 432                         imap_cmd_logout(imap_sock);
 433                         sock_close(imap_sock);
 434                         return NULL;
 435                 }
 436         }
 437
 438         session = g_new(IMAPSession, 1);
 439         SESSION(session)->type             = SESSION_IMAP;
 440         SESSION(session)->server           = g_strdup(account->recv_server);
 441         SESSION(session)->sock             = imap_sock;
 442         SESSION(session)->connected        = TRUE;
 443         SESSION(session)->phase            = SESSION_READY;
 444         SESSION(session)->last_access_time = time(NULL);
 445         SESSION(session)->data             = NULL;
 446         session->mbox = NULL;
 447
 448         session_list = g_list_append(session_list, session);
 449
 450         return SESSION(session);
 451 }
 452
 453 void imap_session_destroy(IMAPSession *session)
 454 {
 455         sock_close(SESSION(session)->sock);
 456         SESSION(session)->sock = NULL;
 457
 458         g_free(session->mbox);
 459
 460         session_list = g_list_remove(session_list, session);
 461 }
 462
 463 void imap_session_destroy_all(void)
 464 {
 465         while (session_list != NULL) {
 466                 IMAPSession *session = (IMAPSession *)session_list->data;
 467
 468                 imap_cmd_logout(SESSION(session)->sock);
 469                 session_destroy(SESSION(session));
 470         }
 471 }
 472
 473 #define THROW goto catch
 474
 475 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 476 {
 477         GSList *mlist = NULL;
 478         IMAPSession *session;
 479         gint ok, exists = 0, recent = 0, unseen = 0;
 480         guint32 uid_validity = 0;
 481         guint32 first_uid = 0, last_uid = 0, begin;
 482
 483         g_return_val_if_fail(folder != NULL, NULL);
 484         g_return_val_if_fail(item != NULL, NULL);
 485         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 486         g_return_val_if_fail(folder->account != NULL, NULL);
 487
 488         session = imap_session_get(folder);
 489
 490         if (!session) {
 491                 mlist = procmsg_read_cache(item, FALSE);
 492                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 493                 procmsg_set_flags(mlist, item);
 494                 statusbar_pop_all();
 495                 return mlist;
 496         }
 497
 498         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 499                          &exists, &recent, &unseen, &uid_validity);
 500         if (ok != IMAP_SUCCESS) THROW;
 501         if (exists > 0) {
 502                 ok = imap_get_uid(session, 1, &first_uid);
 503                 if (ok != IMAP_SUCCESS) THROW;
 504                 if (1 != exists) {
 505                         ok = imap_get_uid(session, exists, &last_uid);
 506                         if (ok != IMAP_SUCCESS) THROW;
 507                 } else
 508                         last_uid = first_uid;
 509         } else {
 510                 imap_delete_all_cached_messages(item);
 511                 statusbar_pop_all();
 512                 return NULL;
 513         }
 514
 515         if (use_cache) {
 516                 guint32 cache_last;
 517
 518                 mlist = procmsg_read_cache(item, FALSE);
 519                 procmsg_set_flags(mlist, item);
 520                 cache_last = procmsg_get_last_num_in_cache(mlist);
 521
 522                 /* calculating the range of envelope to get */
 523                 if (item->mtime != uid_validity) {
 524                         /* mailbox is changed (get all) */
 525                         begin = first_uid;
 526                 } else if (last_uid < cache_last) {
 527                         /* mailbox is changed (get all) */
 528                         begin = first_uid;
 529                 } else if (last_uid == cache_last) {
 530                         /* mailbox unchanged (get none)*/
 531                         begin = 0;
 532                 } else {
 533                         begin = cache_last + 1;
 534                 }
 535
 536                 item->mtime = uid_validity;
 537
 538                 if (first_uid > 0 && last_uid > 0) {
 539                         mlist = imap_delete_cached_messages(mlist, item,
 540                                                             0, first_uid - 1);
 541                         mlist = imap_delete_cached_messages(mlist, item,
 542                                                             last_uid + 1,
 543                                                             UINT_MAX);
 544                 }
 545                 if (begin > 0)
 546                         mlist = imap_delete_cached_messages(mlist, item,
 547                                                             begin, UINT_MAX);
 548         } else {
 549                 imap_delete_all_cached_messages(item);
 550                 begin = first_uid;
 551         }
 552
 553         if (begin > 0 && begin <= last_uid) {
 554                 GSList *newlist;
 555                 newlist = imap_get_uncached_messages(session, item,
 556                                                      begin, last_uid);
 557                 mlist = g_slist_concat(mlist, newlist);
 558         }
 559
 560         item->last_num = last_uid;
 561
 562 catch:
 563         statusbar_pop_all();
 564         return mlist;
 565 }
 566
 567 #undef THROW
 568
 569 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 570 {
 571         gchar *path, *filename;
 572         IMAPSession *session;
 573         gint ok;
 574
 575         g_return_val_if_fail(folder != NULL, NULL);
 576         g_return_val_if_fail(item != NULL, NULL);
 577
 578         path = folder_item_get_path(item);
 579         if (!is_dir_exist(path))
 580                 make_dir_hier(path);
 581         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 582         g_free(path);
 583
 584         if (is_file_exist(filename)) {
 585                 debug_print(_("message %d has been already cached.\n"), uid);
 586                 return filename;
 587         }
 588
 589         session = imap_session_get(folder);
 590         if (!session) {
 591                 g_free(filename);
 592                 return NULL;
 593         }
 594
 595         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 596                          NULL, NULL, NULL, NULL);
 597         statusbar_pop_all();
 598         if (ok != IMAP_SUCCESS) {
 599                 g_warning(_("can't select mailbox %s\n"), item->path);
 600                 g_free(filename);
 601                 return NULL;
 602         }
 603
 604         debug_print(_("getting message %d...\n"), uid);
 605         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 606
 607         statusbar_pop_all();
 608
 609         if (ok != IMAP_SUCCESS) {
 610                 g_warning(_("can't fetch message %d\n"), uid);
 611                 g_free(filename);
 612                 return NULL;
 613         }
 614
 615         return filename;
 616 }
 617
 618 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 619                   gboolean remove_source)
 620 {
 621         gchar *destdir;
 622         IMAPSession *session;
 623         gint messages, recent, unseen;
 624         guint32 uid_next, uid_validity;
 625         gint ok;
 626
 627         g_return_val_if_fail(folder != NULL, -1);
 628         g_return_val_if_fail(dest != NULL, -1);
 629         g_return_val_if_fail(file != NULL, -1);
 630
 631         session = imap_session_get(folder);
 632         if (!session) return -1;
 633
 634         ok = imap_status(session, IMAP_FOLDER(folder), dest->path,
 635                          &messages, &recent, &uid_next, &uid_validity, &unseen);
 636         statusbar_pop_all();
 637         if (ok != IMAP_SUCCESS) {
 638                 g_warning(_("can't append message %s\n"), file);
 639                 return -1;
 640         }
 641
 642         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 643         ok = imap_cmd_append(SESSION(session)->sock, destdir, file);
 644         g_free(destdir);
 645
 646         if (ok != IMAP_SUCCESS) {
 647                 g_warning(_("can't append message %s\n"), file);
 648                 return -1;
 649         }
 650
 651         if (remove_source) {
 652                 if (unlink(file) < 0)
 653                         FILE_OP_ERROR(file, "unlink");
 654         }
 655
 656         return uid_next;
 657 }
 658
 659 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 660                          gboolean remove_source)
 661 {
 662         gchar *destdir;
 663         IMAPSession *session;
 664         gint ok;
 665
 666         g_return_val_if_fail(folder != NULL, -1);
 667         g_return_val_if_fail(folder->type == F_IMAP, -1);
 668         g_return_val_if_fail(dest != NULL, -1);
 669         g_return_val_if_fail(msginfo != NULL, -1);
 670
 671         session = imap_session_get(folder);
 672         if (!session) return -1;
 673
 674         if (msginfo->folder == dest) {
 675                 g_warning(_("the src folder is identical to the dest.\n"));
 676                 return -1;
 677         }
 678
 679         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 680
 681         if (remove_source)
 682                 debug_print(_("Moving message %s%c%d to %s ...\n"),
 683                             msginfo->folder->path, G_DIR_SEPARATOR,
 684                             msginfo->msgnum, destdir);
 685         else
 686                 debug_print(_("Copying message %s%c%d to %s ...\n"),
 687                             msginfo->folder->path, G_DIR_SEPARATOR,
 688                             msginfo->msgnum, destdir);
 689
 690         ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 691
 692         if (ok == IMAP_SUCCESS && remove_source) {
 693                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 694                                        IMAP_FLAG_DELETED, TRUE);
 695                 ok = imap_cmd_expunge(SESSION(session)->sock);
 696         }
 697
 698         g_free(destdir);
 699         statusbar_pop_all();
 700
 701         if (ok == IMAP_SUCCESS)
 702                 return 0;
 703         else
 704                 return -1;
 705 }
 706
 707 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 708                                         GSList *msglist,
 709                                         gboolean remove_source)
 710 {
 711         gchar *destdir;
 712         GSList *cur;
 713         MsgInfo *msginfo;
 714         IMAPSession *session;
 715         gint ok = IMAP_SUCCESS;
 716
 717         g_return_val_if_fail(folder != NULL, -1);
 718         g_return_val_if_fail(dest != NULL, -1);
 719         g_return_val_if_fail(msglist != NULL, -1);
 720
 721         session = imap_session_get(folder);
 722         if (!session) return -1;
 723
 724         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 725
 726         for (cur = msglist; cur != NULL; cur = cur->next) {
 727                 msginfo = (MsgInfo *)cur->data;
 728
 729                 if (msginfo->folder == dest) {
 730                         g_warning(_("the src folder is identical to the dest.\n"));
 731                         continue;
 732                 }
 733
 734                 if (remove_source)
 735                         debug_print(_("Moving message %s%c%d to %s ...\n"),
 736                                     msginfo->folder->path, G_DIR_SEPARATOR,
 737                                     msginfo->msgnum, destdir);
 738                 else
 739                         debug_print(_("Copying message %s%c%d to %s ...\n"),
 740                                     msginfo->folder->path, G_DIR_SEPARATOR,
 741                                     msginfo->msgnum, destdir);
 742
 743                 ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 744                                    destdir);
 745
 746                 if (ok == IMAP_SUCCESS && remove_source) {
 747                         imap_set_message_flags
 748                                 (session, msginfo->msgnum, msginfo->msgnum,
 749                                  IMAP_FLAG_DELETED, TRUE);
 750                 }
 751         }
 752
 753         if (remove_source)
 754                 ok = imap_cmd_expunge(SESSION(session)->sock);
 755
 756         g_free(destdir);
 757         statusbar_pop_all();
 758
 759         if (ok == IMAP_SUCCESS)
 760                 return 0;
 761         else
 762                 return -1;
 763 }
 764
 765 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 766 {
 767         gchar *srcfile;
 768         gint ret = 0;
 769
 770         g_return_val_if_fail(folder != NULL, -1);
 771         g_return_val_if_fail(dest != NULL, -1);
 772         g_return_val_if_fail(msginfo != NULL, -1);
 773         g_return_val_if_fail(msginfo->folder != NULL, -1);
 774
 775         if (folder == msginfo->folder->folder)
 776                 return imap_do_copy(folder, dest, msginfo, TRUE);
 777
 778         srcfile = procmsg_get_message_file(msginfo);
 779         if (!srcfile) return -1;
 780
 781         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 782         g_free(srcfile);
 783
 784         if (ret == 0)
 785                 ret = folder_item_remove_msg(msginfo->folder, msginfo->msgnum);
 786
 787         return ret;
 788 }
 789
 790 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 791                               GSList *msglist)
 792 {
 793         MsgInfo *msginfo;
 794         GSList *cur;
 795         gint ret = 0;
 796
 797         g_return_val_if_fail(folder != NULL, -1);
 798         g_return_val_if_fail(dest != NULL, -1);
 799         g_return_val_if_fail(msglist != NULL, -1);
 800
 801         msginfo = (MsgInfo *)msglist->data;
 802         if (folder == msginfo->folder->folder)
 803                 return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 804
 805         for (cur = msglist; cur != NULL; cur = cur->next) {
 806                 msginfo = (MsgInfo *)cur->data;
 807                 ret = imap_move_msg(folder, dest, msginfo);
 808                 if (ret != 0) break;
 809         }
 810
 811         return ret;
 812 }
 813
 814 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 815 {
 816         gchar *srcfile;
 817         gint ret = 0;
 818
 819         g_return_val_if_fail(folder != NULL, -1);
 820         g_return_val_if_fail(dest != NULL, -1);
 821         g_return_val_if_fail(msginfo != NULL, -1);
 822         g_return_val_if_fail(msginfo->folder != NULL, -1);
 823
 824         if (folder == msginfo->folder->folder)
 825                 return imap_do_copy(folder, dest, msginfo, FALSE);
 826
 827         srcfile = procmsg_get_message_file(msginfo);
 828         if (!srcfile) return -1;
 829
 830         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 831
 832         g_free(srcfile);
 833
 834         return ret;
 835 }
 836
 837 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 838                               GSList *msglist)
 839 {
 840         MsgInfo *msginfo;
 841         GSList *cur;
 842         gint ret = 0;
 843
 844         g_return_val_if_fail(folder != NULL, -1);
 845         g_return_val_if_fail(dest != NULL, -1);
 846         g_return_val_if_fail(msglist != NULL, -1);
 847
 848         msginfo = (MsgInfo *)msglist->data;
 849         if (folder == msginfo->folder->folder)
 850                 return imap_do_copy_msgs_with_dest
 851                         (folder, dest, msglist, FALSE);
 852
 853         for (cur = msglist; cur != NULL; cur = cur->next) {
 854                 msginfo = (MsgInfo *)cur->data;
 855                 ret = imap_copy_msg(folder, dest, msginfo);
 856                 if (ret != 0) break;
 857         }
 858
 859         return ret;
 860 }
 861
 862 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 863 {
 864         gint exists, recent, unseen;
 865         guint32 uid_validity;
 866         gint ok;
 867         IMAPSession *session;
 868
 869         g_return_val_if_fail(folder != NULL, -1);
 870         g_return_val_if_fail(folder->type == F_IMAP, -1);
 871         g_return_val_if_fail(item != NULL, -1);
 872
 873         session = imap_session_get(folder);
 874         if (!session) return -1;
 875
 876         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 877                          &exists, &recent, &unseen, &uid_validity);
 878         statusbar_pop_all();
 879         if (ok != IMAP_SUCCESS)
 880                 return ok;
 881
 882         ok = imap_set_message_flags
 883                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 884                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 885         statusbar_pop_all();
 886         if (ok != IMAP_SUCCESS) {
 887                 log_warning(_("can't set deleted flags: %d\n"), uid);
 888                 return ok;
 889         }
 890
 891         ok = imap_cmd_expunge(SESSION(session)->sock);
 892         statusbar_pop_all();
 893         if (ok != IMAP_SUCCESS) {
 894                 log_warning(_("can't expunge\n"));
 895                 return ok;
 896         }
 897
 898         return IMAP_SUCCESS;
 899 }
 900
 901 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 902 {
 903         gint exists, recent, unseen;
 904         guint32 uid_validity;
 905         gint ok;
 906         IMAPSession *session;
 907
 908         g_return_val_if_fail(folder != NULL, -1);
 909         g_return_val_if_fail(item != NULL, -1);
 910
 911         session = imap_session_get(folder);
 912         if (!session) return -1;
 913
 914         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 915                          &exists, &recent, &unseen, &uid_validity);
 916         statusbar_pop_all();
 917         if (ok != IMAP_SUCCESS)
 918                 return ok;
 919         if (exists == 0)
 920                 return IMAP_SUCCESS;
 921
 922         imap_cmd_gen_send(SESSION(session)->sock,
 923                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
 924         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
 925         statusbar_pop_all();
 926         if (ok != IMAP_SUCCESS) {
 927                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 928                 return ok;
 929         }
 930
 931         ok = imap_cmd_expunge(SESSION(session)->sock);
 932         statusbar_pop_all();
 933         if (ok != IMAP_SUCCESS) {
 934                 log_warning(_("can't expunge\n"));
 935                 return ok;
 936         }
 937
 938         return IMAP_SUCCESS;
 939 }
 940
 941 gboolean imap_is_msg_changed(Folder *folder, FolderItem *item, MsgInfo *msginfo)
 942 {
 943         /* TODO: properly implement this method */
 944         return FALSE;
 945 }
 946
 947 gint imap_scan_folder(Folder *folder, FolderItem *item)
 948 {
 949         IMAPSession *session;
 950         gint messages, recent, unseen;
 951         guint32 uid_next, uid_validity;
 952         gint ok;
 953
 954         g_return_val_if_fail(folder != NULL, -1);
 955         g_return_val_if_fail(item != NULL, -1);
 956
 957         session = imap_session_get(folder);
 958         if (!session) return -1;
 959
 960         ok = imap_status(session, IMAP_FOLDER(folder), item->path,
 961                          &messages, &recent, &uid_next, &uid_validity, &unseen);
 962         statusbar_pop_all();
 963         if (ok != IMAP_SUCCESS) return -1;
 964
 965         item->new = unseen > 0 ? recent : 0;
 966         item->unread = unseen;
 967         item->total = messages;
 968         item->last_num = (messages > 0 && uid_next > 0) ? uid_next - 1 : 0;
 969         /* item->mtime = uid_validity; */
 970
 971         return 0;
 972 }
 973
 974 void imap_scan_tree(Folder *folder)
 975 {
 976         FolderItem *item;
 977         IMAPSession *session;
 978         gchar *root_folder = NULL;
 979
 980         g_return_if_fail(folder != NULL);
 981         g_return_if_fail(folder->account != NULL);
 982
 983         session = imap_session_get(folder);
 984         if (!session) return;
 985
 986         if (folder->account->imap_dir && *folder->account->imap_dir) {
 987                 Xstrdup_a(root_folder, folder->account->imap_dir, return);
 988                 strtailchomp(root_folder, '/');
 989                 debug_print("IMAP root directory: %s\n", root_folder);
 990         }
 991
 992         folder_tree_destroy(folder);
 993         item = folder_item_new(folder->name, root_folder);
 994         item->folder = folder;
 995         folder->node = g_node_new(item);
 996
 997         imap_scan_tree_recursive(session, item);
 998
 999         imap_create_missing_folders(folder);
1000 }
1001
1002 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item)
1003 {
1004         Folder *folder;
1005         IMAPFolder *imapfolder;
1006         FolderItem *new_item;
1007         GSList *item_list, *cur;
1008         gchar *real_path;
1009         gchar *wildcard_path;
1010         gchar separator;
1011         gchar wildcard[3];
1012
1013         g_return_val_if_fail(item != NULL, -1);
1014         g_return_val_if_fail(item->folder != NULL, -1);
1015         g_return_val_if_fail(item->no_sub == FALSE, -1);
1016
1017         folder = FOLDER(item->folder);
1018         imapfolder = IMAP_FOLDER(folder);
1019
1020         separator = imap_get_path_separator(imapfolder, item->path);
1021
1022         if (item->folder->ui_func)
1023                 item->folder->ui_func(folder, item, folder->ui_func_data);
1024
1025         if (item->path) {
1026                 wildcard[0] = separator;
1027                 wildcard[1] = '%';
1028                 wildcard[2] = '\0';
1029                 real_path = imap_get_real_path(imapfolder, item->path);
1030         } else {
1031                 wildcard[0] = '%';
1032                 wildcard[1] = '\0';
1033                 real_path = g_strdup("");
1034         }
1035
1036         Xstrcat_a(wildcard_path, real_path, wildcard,
1037                   {g_free(real_path); return IMAP_ERROR;});
1038         QUOTE_IF_REQUIRED(wildcard_path, wildcard_path);
1039
1040         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s",
1041                           wildcard_path);
1042
1043         strtailchomp(real_path, separator);
1044         item_list = imap_parse_list(session, real_path);
1045         g_free(real_path);
1046
1047         for (cur = item_list; cur != NULL; cur = cur->next) {
1048                 new_item = cur->data;
1049                 if (!strcmp(new_item->path, "INBOX")) {
1050                         if (!folder->inbox) {
1051                                 new_item->stype = F_INBOX;
1052                                 item->folder->inbox = new_item;
1053                         } else {
1054                                 folder_item_destroy(new_item);
1055                                 continue;
1056                         }
1057                 } else if (!item->parent || item->stype == F_INBOX) {
1058                         gchar *base;
1059
1060                         base = g_basename(new_item->path);
1061
1062                         if (!folder->outbox && !strcasecmp(base, "Sent")) {
1063                                 new_item->stype = F_OUTBOX;
1064                                 folder->outbox = new_item;
1065                         } else if (!folder->draft && !strcasecmp(base, "Drafts")) {
1066                                 new_item->stype = F_DRAFT;
1067                                 folder->draft = new_item;
1068                         } else if (!folder->queue && !strcasecmp(base, "Queue")) {
1069                                 new_item->stype = F_QUEUE;
1070                                 folder->queue = new_item;
1071                         } else if (!folder->trash && !strcasecmp(base, "Trash")) {
1072                                 new_item->stype = F_TRASH;
1073                                 folder->trash = new_item;
1074                         }
1075                 }
1076                 folder_item_append(item, new_item);
1077                 if (new_item->no_select == FALSE)
1078                         imap_scan_folder(folder, new_item);
1079                 if (new_item->no_sub == FALSE)
1080                         imap_scan_tree_recursive(session, new_item);
1081         }
1082
1083         return IMAP_SUCCESS;
1084 }
1085
1086 static GSList *imap_parse_list(IMAPSession *session, const gchar *real_path)
1087 {
1088         gchar buf[IMAPBUFSIZE];
1089         gchar flags[256];
1090         gchar separator[16];
1091         gchar *p;
1092         gchar *name;
1093         gchar *loc_name, *loc_path;
1094         GSList *item_list = NULL;
1095         GString *str;
1096         FolderItem *new_item;
1097
1098         debug_print("getting list of %s ...\n",
1099                     *real_path ? real_path : "\"\"");
1100
1101         str = g_string_new(NULL);
1102
1103         for (;;) {
1104                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) <= 0) {
1105                         log_warning(_("error occured while getting LIST.\n"));
1106                         break;
1107                 }
1108                 strretchomp(buf);
1109                 if (buf[0] != '*' || buf[1] != ' ') {
1110                         log_print("IMAP4< %s\n", buf);
1111                         break;
1112                 }
1113                 debug_print("IMAP4< %s\n", buf);
1114
1115                 g_string_assign(str, buf);
1116                 p = str->str + 2;
1117                 if (strncmp(p, "LIST ", 5) != 0) continue;
1118                 p += 5;
1119
1120                 if (*p != '(') continue;
1121                 p++;
1122                 p = strchr_cpy(p, ')', flags, sizeof(flags));
1123                 if (!p) continue;
1124                 while (*p == ' ') p++;
1125
1126                 p = strchr_cpy(p, ' ', separator, sizeof(separator));
1127                 if (!p) continue;
1128                 extract_quote(separator, '"');
1129                 if (!strcmp(separator, "NIL"))
1130                         separator[0] = '\0';
1131
1132                 buf[0] = '\0';
1133                 while (*p == ' ') p++;
1134                 if (*p == '{' || *p == '"')
1135                         p = imap_parse_atom(SESSION(session)->sock, p,
1136                                             buf, sizeof(buf), str);
1137                 else
1138                         strncpy2(buf, p, sizeof(buf));
1139                 strtailchomp(buf, separator[0]);
1140                 if (buf[0] == '\0') continue;
1141                 if (!strcmp(buf, real_path)) continue;
1142
1143                 if (separator[0] != '\0')
1144                         subst_char(buf, separator[0], '/');
1145                 name = g_basename(buf);
1146                 if (name[0] == '.') continue;
1147
1148                 loc_name = imap_modified_utf7_to_locale(name);
1149                 loc_path = imap_modified_utf7_to_locale(buf);
1150                 new_item = folder_item_new(loc_name, loc_path);
1151                 if (strcasestr(flags, "\\Noinferiors") != NULL)
1152                         new_item->no_sub = TRUE;
1153                 if (strcmp(buf, "INBOX") != 0 &&
1154                     strcasestr(flags, "\\Noselect") != NULL)
1155                         new_item->no_select = TRUE;
1156
1157                 item_list = g_slist_append(item_list, new_item);
1158
1159                 debug_print("folder %s has been added.\n", loc_path);
1160                 g_free(loc_path);
1161                 g_free(loc_name);
1162         }
1163
1164         g_string_free(str, TRUE);
1165         statusbar_pop_all();
1166
1167         return item_list;
1168 }
1169
1170 gint imap_create_tree(Folder *folder)
1171 {
1172         g_return_val_if_fail(folder != NULL, -1);
1173         g_return_val_if_fail(folder->node != NULL, -1);
1174         g_return_val_if_fail(folder->node->data != NULL, -1);
1175         g_return_val_if_fail(folder->account != NULL, -1);
1176
1177         imap_scan_tree(folder);
1178         imap_create_missing_folders(folder);
1179
1180         return 0;
1181 }
1182
1183 static void imap_create_missing_folders(Folder *folder)
1184 {
1185         g_return_if_fail(folder != NULL);
1186
1187         if (!folder->inbox)
1188                 folder->inbox = imap_create_special_folder
1189                         (folder, F_INBOX, "INBOX");
1190 #if 0
1191         if (!folder->outbox)
1192                 folder->outbox = imap_create_special_folder
1193                         (folder, F_OUTBOX, "Sent");
1194         if (!folder->draft)
1195                 folder->draft = imap_create_special_folder
1196                         (folder, F_DRAFT, "Drafts");
1197         if (!folder->queue)
1198                 folder->queue = imap_create_special_folder
1199                         (folder, F_QUEUE, "Queue");
1200 #endif
1201         if (!folder->trash)
1202                 folder->trash = imap_create_special_folder
1203                         (folder, F_TRASH, "Trash");
1204 }
1205
1206 static FolderItem *imap_create_special_folder(Folder *folder,
1207                                               SpecialFolderItemType stype,
1208                                               const gchar *name)
1209 {
1210         FolderItem *item;
1211         FolderItem *new_item;
1212
1213         g_return_val_if_fail(folder != NULL, NULL);
1214         g_return_val_if_fail(folder->node != NULL, NULL);
1215         g_return_val_if_fail(folder->node->data != NULL, NULL);
1216         g_return_val_if_fail(folder->account != NULL, NULL);
1217         g_return_val_if_fail(name != NULL, NULL);
1218
1219         item = FOLDER_ITEM(folder->node->data);
1220         new_item = imap_create_folder(folder, item, name);
1221
1222         if (!new_item) {
1223                 g_warning(_("Can't create '%s'\n"), name);
1224                 if (!folder->inbox) return NULL;
1225
1226                 new_item = imap_create_folder(folder, folder->inbox, name);
1227                 if (!new_item)
1228                         g_warning(_("Can't create '%s' under INBOX\n"), name);
1229                 else
1230                         new_item->stype = stype;
1231         } else
1232                 new_item->stype = stype;
1233
1234         return new_item;
1235 }
1236
1237 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
1238                                const gchar *name)
1239 {
1240         gchar *dirpath, *imap_path;
1241         IMAPSession *session;
1242         FolderItem *new_item;
1243         gchar separator;
1244         gchar *new_name;
1245         const gchar *p;
1246         gint ok;
1247
1248         g_return_val_if_fail(folder != NULL, NULL);
1249         g_return_val_if_fail(folder->account != NULL, NULL);
1250         g_return_val_if_fail(parent != NULL, NULL);
1251         g_return_val_if_fail(name != NULL, NULL);
1252
1253         session = imap_session_get(folder);
1254         if (!session) return NULL;
1255
1256         if (!parent->parent && strcmp(name, "INBOX") == 0)
1257                 dirpath = g_strdup(name);
1258         else if (parent->path)
1259                 dirpath = g_strconcat(parent->path, "/", name, NULL);
1260         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
1261                 dirpath = g_strdup(name);
1262         else if (folder->account->imap_dir && *folder->account->imap_dir) {
1263                 gchar *imap_dir;
1264
1265                 Xstrdup_a(imap_dir, folder->account->imap_dir, return NULL);
1266                 strtailchomp(imap_dir, '/');
1267                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
1268         } else
1269                 dirpath = g_strdup(name);
1270
1271         /* keep trailing directory separator to create a folder that contains
1272            sub folder */
1273         imap_path = imap_locale_to_modified_utf7(dirpath);
1274         strtailchomp(dirpath, '/');
1275         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
1276         strtailchomp(new_name, '/');
1277         separator = imap_get_path_separator(IMAP_FOLDER(folder), imap_path);
1278         imap_path_separator_subst(imap_path, separator);
1279         subst_char(new_name, '/', separator);
1280
1281         if (strcmp(name, "INBOX") != 0) {
1282                 GPtrArray *argbuf;
1283                 gint i;
1284                 gboolean exist = FALSE;
1285
1286                 argbuf = g_ptr_array_new();
1287                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imap_path,
1288                                    argbuf);
1289                 statusbar_pop_all();
1290                 if (ok != IMAP_SUCCESS) {
1291                         log_warning(_("can't create mailbox: LIST failed\n"));
1292                         g_free(imap_path);
1293                         g_free(dirpath);
1294                         g_ptr_array_free(argbuf, TRUE);
1295                         return NULL;
1296                 }
1297
1298                 for (i = 0; i < argbuf->len; i++) {
1299                         gchar *str;
1300                         str = g_ptr_array_index(argbuf, i);
1301                         if (!strncmp(str, "LIST ", 5)) {
1302                                 exist = TRUE;
1303                                 break;
1304                         }
1305                 }
1306                 g_ptr_array_free(argbuf, TRUE);
1307
1308                 if (!exist) {
1309                         ok = imap_cmd_create(SESSION(session)->sock, imap_path);
1310                         statusbar_pop_all();
1311                         if (ok != IMAP_SUCCESS) {
1312                                 log_warning(_("can't create mailbox\n"));
1313                                 g_free(imap_path);
1314                                 g_free(dirpath);
1315                                 return NULL;
1316                         }
1317                 }
1318         }
1319
1320         new_item = folder_item_new(new_name, dirpath);
1321         folder_item_append(parent, new_item);
1322         g_free(imap_path);
1323         g_free(dirpath);
1324
1325         dirpath = folder_item_get_path(new_item);
1326         if (!is_dir_exist(dirpath))
1327                 make_dir_hier(dirpath);
1328         g_free(dirpath);
1329
1330         return new_item;
1331 }
1332
1333 gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
1334 {
1335         gchar *dirpath;
1336         gchar *newpath;
1337         gchar *real_oldpath;
1338         gchar *real_newpath;
1339         GNode *node;
1340         gchar *paths[2];
1341         gchar *old_cache_dir;
1342         gchar *new_cache_dir;
1343         IMAPSession *session;
1344         gchar separator;
1345         gint ok;
1346         gint exists, recent, unseen;
1347         guint32 uid_validity;
1348
1349         g_return_val_if_fail(folder != NULL, -1);
1350         g_return_val_if_fail(item != NULL, -1);
1351         g_return_val_if_fail(item->path != NULL, -1);
1352         g_return_val_if_fail(name != NULL, -1);
1353
1354         session = imap_session_get(folder);
1355         if (!session) return -1;
1356
1357         real_oldpath = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1358
1359         g_free(session->mbox);
1360         session->mbox = NULL;
1361         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1362                               &exists, &recent, &unseen, &uid_validity);
1363         statusbar_pop_all();
1364         if (ok != IMAP_SUCCESS) {
1365                 g_free(real_oldpath);
1366                 return -1;
1367         }
1368
1369         separator = imap_get_path_separator(IMAP_FOLDER(folder), item->path);
1370         if (strchr(item->path, G_DIR_SEPARATOR)) {
1371                 dirpath = g_dirname(item->path);
1372                 newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
1373                 g_free(dirpath);
1374         } else
1375                 newpath = g_strdup(name);
1376
1377         real_newpath = imap_locale_to_modified_utf7(newpath);
1378         imap_path_separator_subst(real_newpath, separator);
1379
1380         ok = imap_cmd_rename(SESSION(session)->sock, real_oldpath, real_newpath);
1381         statusbar_pop_all();
1382         if (ok != IMAP_SUCCESS) {
1383                 log_warning(_("can't rename mailbox: %s to %s\n"),
1384                             real_oldpath, real_newpath);
1385                 g_free(real_oldpath);
1386                 g_free(newpath);
1387                 g_free(real_newpath);
1388                 return -1;
1389         }
1390
1391         g_free(item->name);
1392         item->name = g_strdup(name);
1393
1394         old_cache_dir = folder_item_get_path(item);
1395
1396         node = g_node_find(item->folder->node, G_PRE_ORDER, G_TRAVERSE_ALL,
1397                            item);
1398         paths[0] = g_strdup(item->path);
1399         paths[1] = newpath;
1400         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1401                         imap_rename_folder_func, paths);
1402
1403         if (is_dir_exist(old_cache_dir)) {
1404                 new_cache_dir = folder_item_get_path(item);
1405                 if (rename(old_cache_dir, new_cache_dir) < 0) {
1406                         FILE_OP_ERROR(old_cache_dir, "rename");
1407                 }
1408                 g_free(new_cache_dir);
1409         }
1410
1411         g_free(old_cache_dir);
1412         g_free(paths[0]);
1413         g_free(newpath);
1414         g_free(real_oldpath);
1415         g_free(real_newpath);
1416
1417         return 0;
1418 }
1419
1420 gint imap_remove_folder(Folder *folder, FolderItem *item)
1421 {
1422         gint ok;
1423         IMAPSession *session;
1424         gchar *path;
1425         gchar *cache_dir;
1426         gint exists, recent, unseen;
1427         guint32 uid_validity;
1428
1429         g_return_val_if_fail(folder != NULL, -1);
1430         g_return_val_if_fail(item != NULL, -1);
1431         g_return_val_if_fail(item->path != NULL, -1);
1432
1433         session = imap_session_get(folder);
1434         if (!session) return -1;
1435
1436         path = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1437
1438         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1439                               &exists, &recent, &unseen, &uid_validity);
1440         statusbar_pop_all();
1441         if (ok != IMAP_SUCCESS) {
1442                 g_free(path);
1443                 return -1;
1444         }
1445
1446         ok = imap_cmd_delete(SESSION(session)->sock, path);
1447         statusbar_pop_all();
1448         if (ok != IMAP_SUCCESS) {
1449                 log_warning(_("can't delete mailbox\n"));
1450                 g_free(path);
1451                 return -1;
1452         }
1453
1454         g_free(path);
1455         cache_dir = folder_item_get_path(item);
1456         if (is_dir_exist(cache_dir) && remove_dir_recursive(cache_dir) < 0)
1457                 g_warning("can't remove directory '%s'\n", cache_dir);
1458         g_free(cache_dir);
1459         folder_item_remove(item);
1460
1461         return 0;
1462 }
1463
1464 static GSList *imap_get_uncached_messages(IMAPSession *session,
1465                                           FolderItem *item,
1466                                           guint32 first_uid, guint32 last_uid)
1467 {
1468         gchar *tmp;
1469         GSList *newlist = NULL;
1470         GSList *llast = NULL;
1471         GString *str;
1472         MsgInfo *msginfo;
1473
1474         g_return_val_if_fail(session != NULL, NULL);
1475         g_return_val_if_fail(item != NULL, NULL);
1476         g_return_val_if_fail(item->folder != NULL, NULL);
1477         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
1478         g_return_val_if_fail(first_uid <= last_uid, NULL);
1479
1480         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
1481             != IMAP_SUCCESS) {
1482                 log_warning(_("can't get envelope\n"));
1483                 return NULL;
1484         }
1485
1486         str = g_string_new(NULL);
1487
1488         for (;;) {
1489                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
1490                         log_warning(_("error occurred while getting envelope.\n"));
1491                         g_string_free(str, TRUE);
1492                         return newlist;
1493                 }
1494                 strretchomp(tmp);
1495                 if (tmp[0] != '*' || tmp[1] != ' ') {
1496                         log_print("IMAP4< %s\n", tmp);
1497                         g_free(tmp);
1498                         break;
1499                 }
1500                 if (strstr(tmp, "FETCH") == NULL) {
1501                         log_print("IMAP4< %s\n", tmp);
1502                         g_free(tmp);
1503                         continue;
1504                 }
1505                 /* log_print("IMAP4< %s\n", tmp); */
1506                 debug_print("IMAP4< %s\n", tmp);
1507                 g_string_assign(str, tmp);
1508                 g_free(tmp);
1509
1510                 msginfo = imap_parse_envelope(SESSION(session)->sock, str);
1511                 if (!msginfo) {
1512                         log_warning(_("can't parse envelope: %s\n"), str->str);
1513                         continue;
1514                 }
1515                 if (item->stype == F_QUEUE) {
1516                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_QUEUED);
1517                 } else if (item->stype == F_DRAFT) {
1518                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_DRAFT);
1519                 }
1520
1521                 msginfo->folder = item;
1522
1523                 if (!newlist)
1524                         llast = newlist = g_slist_append(newlist, msginfo);
1525                 else {
1526                         llast = g_slist_append(llast, msginfo);
1527                         llast = llast->next;
1528                 }
1529         }
1530
1531         g_string_free(str, TRUE);
1532
1533         return newlist;
1534 }
1535
1536 static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
1537                                            guint32 first_uid, guint32 last_uid)
1538 {
1539         GSList *cur, *next;
1540         MsgInfo *msginfo;
1541         gchar *dir;
1542
1543         g_return_val_if_fail(item != NULL, mlist);
1544         g_return_val_if_fail(item->folder != NULL, mlist);
1545         g_return_val_if_fail(item->folder->type == F_IMAP, mlist);
1546
1547         debug_print(_("Deleting cached messages %d - %d ... "),
1548                     first_uid, last_uid);
1549
1550         dir = folder_item_get_path(item);
1551         remove_numbered_files(dir, first_uid, last_uid);
1552         g_free(dir);
1553
1554         for (cur = mlist; cur != NULL; ) {
1555                 next = cur->next;
1556
1557                 msginfo = (MsgInfo *)cur->data;
1558                 if (msginfo != NULL && first_uid <= msginfo->msgnum &&
1559                     msginfo->msgnum <= last_uid) {
1560                         procmsg_msginfo_free(msginfo);
1561                         mlist = g_slist_remove(mlist, msginfo);
1562                 }
1563
1564                 cur = next;
1565         }
1566
1567         debug_print(_("done.\n"));
1568
1569         return mlist;
1570 }
1571
1572 static void imap_delete_all_cached_messages(FolderItem *item)
1573 {
1574         gchar *dir;
1575
1576         g_return_if_fail(item != NULL);
1577         g_return_if_fail(item->folder != NULL);
1578         g_return_if_fail(item->folder->type == F_IMAP);
1579
1580         debug_print(_("Deleting all cached messages... "));
1581
1582         dir = folder_item_get_path(item);
1583         remove_all_numbered_files(dir);
1584         g_free(dir);
1585
1586         debug_print(_("done.\n"));
1587 }
1588
1589
1590 static SockInfo *imap_open_tunnel(const gchar *server,
1591                            const gchar *tunnelcmd)
1592 {
1593         SockInfo *sock;
1594
1595         if ((sock = sock_connect_cmd(server, tunnelcmd)) == NULL)
1596                 log_warning(_("Can't establish IMAP4 session with: %s\n"),
1597                             server);
1598                 return NULL;
1599
1600         return imap_init_sock(sock);
1601 }
1602
1603
1604 #if USE_SSL
1605 static SockInfo *imap_open(const gchar *server, gushort port,
1606                            gboolean use_ssl)
1607 #else
1608 static SockInfo *imap_open(const gchar *server, gushort port)
1609 #endif
1610 {
1611         SockInfo *sock;
1612
1613         if ((sock = sock_connect(server, port)) == NULL) {
1614                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
1615                             server, port);
1616                 return NULL;
1617         }
1618
1619 #if USE_SSL
1620         if (use_ssl && !ssl_init_socket(sock)) {
1621                 log_warning(_("Can't establish IMAP4 session with: %s:%d\n"),
1622                             server, port);
1623                 sock_close(sock);
1624                 return NULL;
1625         }
1626 #endif
1627
1628         return imap_init_sock(sock);
1629 }
1630
1631
1632 static SockInfo *imap_init_sock(SockInfo *sock)
1633 {
1634         imap_cmd_count = 0;
1635
1636         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
1637                 log_warning(_("Can't establish IMAP4 session\n"));
1638                 sock_close(sock);
1639                 return NULL;
1640         }
1641
1642         return sock;
1643 }
1644
1645 static GList *imap_parse_namespace_str(gchar *str)
1646 {
1647         gchar *p = str;
1648         gchar *name;
1649         gchar *separator;
1650         IMAPNameSpace *namespace;
1651         GList *ns_list = NULL;
1652
1653         while (*p != '\0') {
1654                 /* parse ("#foo" "/") */
1655
1656                 while (*p && *p != '(') p++;
1657                 if (*p == '\0') break;
1658                 p++;
1659
1660                 while (*p && *p != '"') p++;
1661                 if (*p == '\0') break;
1662                 p++;
1663                 name = p;
1664
1665                 while (*p && *p != '"') p++;
1666                 if (*p == '\0') break;
1667                 *p = '\0';
1668                 p++;
1669
1670                 while (*p && isspace(*p)) p++;
1671                 if (*p == '\0') break;
1672                 if (strncmp(p, "NIL", 3) == 0)
1673                         separator = NULL;
1674                 else if (*p == '"') {
1675                         p++;
1676                         separator = p;
1677                         while (*p && *p != '"') p++;
1678                         if (*p == '\0') break;
1679                         *p = '\0';
1680                         p++;
1681                 } else break;
1682
1683                 while (*p && *p != ')') p++;
1684                 if (*p == '\0') break;
1685                 p++;
1686
1687                 namespace = g_new(IMAPNameSpace, 1);
1688                 namespace->name = g_strdup(name);
1689                 namespace->separator = separator ? separator[0] : '\0';
1690                 ns_list = g_list_append(ns_list, namespace);
1691         }
1692
1693         return ns_list;
1694 }
1695
1696 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
1697 {
1698         gchar *ns_str;
1699         gchar **str_array;
1700
1701         g_return_if_fail(session != NULL);
1702         g_return_if_fail(folder != NULL);
1703
1704         if (folder->ns_personal != NULL ||
1705             folder->ns_others   != NULL ||
1706             folder->ns_shared   != NULL)
1707                 return;
1708
1709         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
1710             != IMAP_SUCCESS) {
1711                 log_warning(_("can't get namespace\n"));
1712                 return;
1713         }
1714
1715         str_array = strsplit_parenthesis(ns_str, '(', ')', 3);
1716         if (str_array[0])
1717                 folder->ns_personal = imap_parse_namespace_str(str_array[0]);
1718         if (str_array[0] && str_array[1])
1719                 folder->ns_others = imap_parse_namespace_str(str_array[1]);
1720         if (str_array[0] && str_array[1] && str_array[2])
1721                 folder->ns_shared = imap_parse_namespace_str(str_array[2]);
1722         g_strfreev(str_array);
1723         return;
1724 }
1725
1726 static IMAPNameSpace *imap_find_namespace_from_list(GList *ns_list,
1727                                                     const gchar *path)
1728 {
1729         IMAPNameSpace *namespace = NULL;
1730         gchar *tmp_path, *name;
1731
1732         if (!path) path = "";
1733
1734         Xstrcat_a(tmp_path, path, "/", return NULL);
1735
1736         for (; ns_list != NULL; ns_list = ns_list->next) {
1737                 IMAPNameSpace *tmp_ns = ns_list->data;
1738
1739                 Xstrdup_a(name, tmp_ns->name, return namespace);
1740                 if (tmp_ns->separator && tmp_ns->separator != '/')
1741                         subst_char(name, tmp_ns->separator, '/');
1742                 if (strncmp(tmp_path, name, strlen(name)) == 0)
1743                         namespace = tmp_ns;
1744         }
1745
1746         return namespace;
1747 }
1748
1749 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1750                                           const gchar *path)
1751 {
1752         IMAPNameSpace *namespace;
1753
1754         g_return_val_if_fail(folder != NULL, NULL);
1755
1756         namespace = imap_find_namespace_from_list(folder->ns_personal, path);
1757         if (namespace) return namespace;
1758         namespace = imap_find_namespace_from_list(folder->ns_others, path);
1759         if (namespace) return namespace;
1760         namespace = imap_find_namespace_from_list(folder->ns_shared, path);
1761         if (namespace) return namespace;
1762
1763         return NULL;
1764 }
1765
1766 static gchar imap_get_path_separator(IMAPFolder *folder, const gchar *path)
1767 {
1768         IMAPNameSpace *namespace;
1769         gchar separator = '/';
1770
1771         namespace = imap_find_namespace(folder, path);
1772         if (namespace && namespace->separator)
1773                 separator = namespace->separator;
1774
1775         return separator;
1776 }
1777
1778 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
1779 {
1780         gchar *real_path;
1781         gchar separator;
1782
1783         g_return_val_if_fail(folder != NULL, NULL);
1784         g_return_val_if_fail(path != NULL, NULL);
1785
1786         real_path = imap_locale_to_modified_utf7(path);
1787         separator = imap_get_path_separator(folder, path);
1788         imap_path_separator_subst(real_path, separator);
1789
1790         return real_path;
1791 }
1792
1793 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1794                               gchar *dest, gint dest_len, GString *str)
1795 {
1796         gchar *cur_pos = src;
1797         gchar *nextline;
1798
1799         g_return_val_if_fail(str != NULL, cur_pos);
1800
1801         /* read the next line if the current response buffer is empty */
1802         while (isspace(*cur_pos)) cur_pos++;
1803         while (*cur_pos == '\0') {
1804                 if ((nextline = sock_getline(sock)) == NULL)
1805                         return cur_pos;
1806                 g_string_assign(str, nextline);
1807                 cur_pos = str->str;
1808                 strretchomp(nextline);
1809                 /* log_print("IMAP4< %s\n", nextline); */
1810                 debug_print("IMAP4< %s\n", nextline);
1811                 g_free(nextline);
1812
1813                 while (isspace(*cur_pos)) cur_pos++;
1814         }
1815
1816         if (!strncmp(cur_pos, "NIL", 3)) {
1817                 *dest = '\0';
1818                 cur_pos += 3;
1819         } else if (*cur_pos == '\"') {
1820                 gchar *p;
1821
1822                 p = get_quoted(cur_pos, '\"', dest, dest_len);
1823                 cur_pos = p ? p : cur_pos + 2;
1824         } else if (*cur_pos == '{') {
1825                 gchar buf[32];
1826                 gint len;
1827                 gint line_len = 0;
1828
1829                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1830                 len = atoi(buf);
1831
1832                 g_string_truncate(str, 0);
1833                 cur_pos = str->str;
1834
1835                 do {
1836                         if ((nextline = sock_getline(sock)) == NULL)
1837                                 return cur_pos;
1838                         line_len += strlen(nextline);
1839                         g_string_append(str, nextline);
1840                         cur_pos = str->str;
1841                         strretchomp(nextline);
1842                         /* log_print("IMAP4< %s\n", nextline); */
1843                         debug_print("IMAP4< %s\n", nextline);
1844                         g_free(nextline);
1845                 } while (line_len < len);
1846
1847                 memcpy(dest, cur_pos, MIN(len, dest_len - 1));
1848                 dest[MIN(len, dest_len - 1)] = '\0';
1849                 cur_pos += len;
1850         }
1851
1852         return cur_pos;
1853 }
1854
1855 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
1856                                      gchar *out_from_str,
1857                                      gchar *out_fromname_str,
1858                                      GString *str)
1859 {
1860         gchar buf[IMAPBUFSIZE];
1861         gchar *userid;
1862         gchar *domain;
1863         gchar *cur_pos = start;
1864
1865         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1866         conv_unmime_header(out_fromname_str, IMAPBUFSIZE, buf, NULL);
1867
1868         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1869
1870         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1871         Xstrdup_a(userid, buf, return cur_pos + 1);
1872
1873         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1874         Xstrdup_a(domain, buf, return cur_pos + 1);
1875
1876         if (out_fromname_str[0] != '\0') {
1877                 g_snprintf(out_from_str, IMAPBUFSIZE, "\"%s\" <%s@%s>",
1878                            out_fromname_str, userid, domain);
1879         } else {
1880                 g_snprintf(out_from_str, IMAPBUFSIZE, "%s@%s",
1881                            userid, domain);
1882                 strcpy(out_fromname_str, out_from_str);
1883         }
1884
1885         while (*cur_pos == ' ') cur_pos++;
1886         g_return_val_if_fail(*cur_pos == ')', NULL);
1887
1888         return cur_pos + 1;
1889 }
1890
1891 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
1892                                  gchar **out_from_str,
1893                                  gchar **out_fromname_str,
1894                                  GString *str)
1895 {
1896         gchar buf[IMAPBUFSIZE];
1897         gchar name_buf[IMAPBUFSIZE];
1898         gchar *cur_pos = start;
1899         GString *addr_str;
1900
1901         if (out_from_str)     *out_from_str     = NULL;
1902         if (out_fromname_str) *out_fromname_str = NULL;
1903         buf[0] = name_buf[0] = '\0';
1904
1905         if (!strncmp(cur_pos, "NIL", 3)) {
1906                 if (out_from_str)     *out_from_str     = g_strdup("");
1907                 if (out_fromname_str) *out_fromname_str = g_strdup("");
1908                 return cur_pos + 3;
1909         }
1910
1911         g_return_val_if_fail(*cur_pos == '(', NULL);
1912         cur_pos++;
1913
1914         addr_str = g_string_new(NULL);
1915
1916         for (;;) {
1917                 gchar ch = *cur_pos++;
1918                 if (ch == ')') break;
1919                 if (ch == '(') {
1920                         cur_pos = imap_parse_one_address
1921                                 (sock, cur_pos, buf, name_buf, str);
1922                         if (!cur_pos) {
1923                                 g_string_free(addr_str, TRUE);
1924                                 return NULL;
1925                         }
1926                         if (addr_str->str[0] != '\0')
1927                                 g_string_append(addr_str, ", ");
1928                         g_string_append(addr_str, buf);
1929                 }
1930         }
1931
1932         if (out_from_str)     *out_from_str     = g_strdup(addr_str->str);
1933         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
1934
1935         g_string_free(addr_str, TRUE);
1936
1937         return cur_pos;
1938 }
1939
1940 static MsgFlags imap_parse_flags(const gchar *flag_str)
1941 {
1942         const gchar *p = flag_str;
1943         MsgFlags flags;
1944
1945         flags.perm_flags = MSG_UNREAD;
1946         flags.tmp_flags  = MSG_IMAP;
1947
1948         while ((p = strchr(p, '\\')) != NULL) {
1949                 p++;
1950
1951                 if (g_strncasecmp(p, "Recent", 6) == 0 && MSG_IS_UNREAD(flags)) {
1952                         MSG_SET_PERM_FLAGS(flags, MSG_NEW);
1953                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
1954                         MSG_UNSET_PERM_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1955                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
1956                         MSG_SET_PERM_FLAGS(flags, MSG_DELETED);
1957                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
1958                         MSG_SET_PERM_FLAGS(flags, MSG_MARKED);
1959                 } else if (g_strncasecmp(p, "Answered", 8) == 0) {
1960                         MSG_SET_PERM_FLAGS(flags, MSG_REPLIED);
1961                 }
1962         }
1963
1964         return flags;
1965 }
1966
1967 static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
1968 {
1969         MsgInfo *msginfo;
1970         gchar buf[IMAPBUFSIZE];
1971         gchar tmp[IMAPBUFSIZE];
1972         gchar *cur_pos;
1973         gint msgnum;
1974         guint32 uid = 0;
1975         size_t size = 0;
1976         gchar *date = NULL;
1977         time_t date_t = 0;
1978         gchar *subject = NULL;
1979         gchar *tmp_from;
1980         gchar *tmp_fromname;
1981         gchar *from = NULL;
1982         gchar *fromname = NULL;
1983         gchar *tmp_to;
1984         gchar *to = NULL;
1985         gchar *inreplyto = NULL;
1986         gchar *msgid = NULL;
1987         MsgFlags flags = {0, 0};
1988
1989         g_return_val_if_fail(line_str != NULL, NULL);
1990         g_return_val_if_fail(line_str->str[0] == '*' &&
1991                              line_str->str[1] == ' ', NULL);
1992
1993         cur_pos = line_str->str + 2;
1994
1995 #define PARSE_ONE_ELEMENT(ch) \
1996 { \
1997         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
1998         g_return_val_if_fail(cur_pos != NULL, NULL); \
1999 }
2000
2001         PARSE_ONE_ELEMENT(' ');
2002         msgnum = atoi(buf);
2003
2004         PARSE_ONE_ELEMENT(' ');
2005         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
2006
2007         g_return_val_if_fail(*cur_pos == '(', NULL);
2008         cur_pos++;
2009
2010         while (*cur_pos != '\0' && *cur_pos != ')') {
2011                 while (*cur_pos == ' ') cur_pos++;
2012
2013                 if (!strncmp(cur_pos, "UID ", 4)) {
2014                         cur_pos += 4;
2015                         uid = strtoul(cur_pos, &cur_pos, 10);
2016                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
2017                         cur_pos += 6;
2018                         g_return_val_if_fail(*cur_pos == '(', NULL);
2019                         cur_pos++;
2020                         PARSE_ONE_ELEMENT(')');
2021                         flags = imap_parse_flags(buf);
2022                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
2023                         cur_pos += 12;
2024                         size = strtol(cur_pos, &cur_pos, 10);
2025                 } else if (!strncmp(cur_pos, "ENVELOPE ", 9)) {
2026                         cur_pos += 9;
2027                         g_return_val_if_fail(*cur_pos == '(', NULL);
2028                         cur_pos = imap_parse_atom
2029                                 (sock, cur_pos + 1, buf, sizeof(buf), line_str);
2030                         if (buf[0] != '\0') {
2031                                 Xstrdup_a(date, buf, return NULL);
2032                                 date_t = procheader_date_parse(NULL, date, 0);
2033                         }
2034
2035                         cur_pos = imap_parse_atom
2036                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2037                         if (buf[0] != '\0') {
2038                                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
2039                                 Xstrdup_a(subject, tmp, return NULL);
2040                         }
2041
2042                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2043                         cur_pos = imap_parse_address(sock, cur_pos + 1,
2044                                                      &tmp_from, &tmp_fromname,
2045                                                      line_str);
2046                         g_return_val_if_fail(cur_pos != NULL, NULL);
2047                         if (tmp_from && *tmp_from != '\0')
2048                                 Xstrdup_a(from, tmp_from,
2049                                           {g_free(tmp_from);
2050                                            g_free(tmp_fromname);
2051                                            return NULL;});
2052                         if (tmp_fromname && *tmp_fromname != '\0')
2053                                 Xstrdup_a(fromname, tmp_fromname,
2054                                           {g_free(tmp_from);
2055                                            g_free(tmp_fromname);
2056                                            return NULL;});
2057                         g_free(tmp_from);
2058                         g_free(tmp_fromname);
2059
2060 #define SKIP_ONE_ELEMENT() \
2061 { \
2062         g_return_val_if_fail(*cur_pos == ' ', NULL); \
2063         cur_pos = imap_parse_address(sock, cur_pos + 1, NULL, NULL, \
2064                                      line_str); \
2065         g_return_val_if_fail(cur_pos != NULL, NULL); \
2066 }
2067
2068                         /* skip sender and reply-to */
2069                         SKIP_ONE_ELEMENT();
2070                         SKIP_ONE_ELEMENT();
2071
2072                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2073                         cur_pos = imap_parse_address(sock, cur_pos + 1,
2074                                                      &tmp_to, NULL, line_str);
2075                         g_return_val_if_fail(cur_pos != NULL, NULL);
2076                         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
2077                         g_free(tmp_to);
2078
2079                         /* skip Cc and Bcc */
2080                         SKIP_ONE_ELEMENT();
2081                         SKIP_ONE_ELEMENT();
2082
2083 #undef SKIP_ONE_ELEMENT
2084
2085                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2086                         cur_pos = imap_parse_atom
2087                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2088                         g_return_val_if_fail(cur_pos != NULL, NULL);
2089                         if (buf[0] != '\0') {
2090                                 eliminate_parenthesis(buf, '(', ')');
2091                                 extract_parenthesis(buf, '<', '>');
2092                                 remove_space(buf);
2093                                 Xstrdup_a(inreplyto, buf, return NULL);
2094                         }
2095
2096                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2097                         cur_pos = imap_parse_atom
2098                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2099                         g_return_val_if_fail(cur_pos != NULL, NULL);
2100                         if (buf[0] != '\0') {
2101                                 extract_parenthesis(buf, '<', '>');
2102                                 remove_space(buf);
2103                                 Xstrdup_a(msgid, buf, return NULL);
2104                         }
2105
2106                         g_return_val_if_fail(*cur_pos == ')', NULL);
2107                         cur_pos++;
2108                 } else {
2109                         g_warning("invalid FETCH response: %s\n", cur_pos);
2110                         break;
2111                 }
2112         }
2113
2114         msginfo = g_new0(MsgInfo, 1);
2115         msginfo->msgnum = uid;
2116         msginfo->size = size;
2117         msginfo->date = g_strdup(date);
2118         msginfo->date_t = date_t;
2119         msginfo->subject = g_strdup(subject);
2120         msginfo->from = g_strdup(from);
2121         msginfo->fromname = g_strdup(fromname);
2122         msginfo->to = g_strdup(to);
2123         msginfo->inreplyto = g_strdup(inreplyto);
2124         msginfo->msgid = g_strdup(msgid);
2125         msginfo->flags = flags;
2126
2127         return msginfo;
2128 }
2129
2130 gint imap_msg_set_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2131 {
2132         Folder *folder;
2133         IMAPSession *session;
2134         IMAPFlags iflags = 0;
2135         gint ok = IMAP_SUCCESS;
2136
2137         g_return_val_if_fail(msginfo != NULL, -1);
2138         g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
2139         g_return_val_if_fail(msginfo->folder != NULL, -1);
2140         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2141
2142         folder = msginfo->folder->folder;
2143         g_return_val_if_fail(folder->type == F_IMAP, -1);
2144
2145         session = imap_session_get(folder);
2146         if (!session) return -1;
2147
2148         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2149         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2150         if (iflags) {
2151                 ok = imap_set_message_flags(session, msginfo->msgnum,
2152                                             msginfo->msgnum, iflags, TRUE);
2153                 if (ok != IMAP_SUCCESS) return ok;
2154         }
2155
2156         if (flags & MSG_UNREAD)
2157                 ok = imap_set_message_flags(session, msginfo->msgnum,
2158                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2159                                             FALSE);
2160         return ok;
2161 }
2162
2163 gint imap_msg_unset_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2164 {
2165         Folder *folder;
2166         IMAPSession *session;
2167         IMAPFlags iflags = 0;
2168         gint ok = IMAP_SUCCESS;
2169
2170         g_return_val_if_fail(msginfo != NULL, -1);
2171         g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
2172         g_return_val_if_fail(msginfo->folder != NULL, -1);
2173         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2174
2175         folder = msginfo->folder->folder;
2176         g_return_val_if_fail(folder->type == F_IMAP, -1);
2177
2178         session = imap_session_get(folder);
2179         if (!session) return -1;
2180
2181         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2182         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2183         if (iflags) {
2184                 ok = imap_set_message_flags(session, msginfo->msgnum,
2185                                             msginfo->msgnum, iflags, FALSE);
2186                 if (ok != IMAP_SUCCESS) return ok;
2187         }
2188
2189         if (flags & MSG_UNREAD)
2190                 ok = imap_set_message_flags(session, msginfo->msgnum,
2191                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2192                                             TRUE);
2193         return ok;
2194 }
2195
2196 static gint imap_set_message_flags(IMAPSession *session,
2197                                    guint32 first_uid,
2198                                    guint32 last_uid,
2199                                    IMAPFlags flags,
2200                                    gboolean is_set)
2201 {
2202         GString *buf;
2203         gint ok;
2204
2205         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
2206
2207         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
2208         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
2209         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
2210         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
2211         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
2212
2213         if (buf->str[buf->len - 1] == ' ')
2214                 g_string_truncate(buf, buf->len - 1);
2215
2216         g_string_append_c(buf, ')');
2217
2218         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
2219                             buf->str);
2220         g_string_free(buf, TRUE);
2221
2222         return ok;
2223 }
2224
2225 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
2226                         const gchar *path,
2227                         gint *exists, gint *recent, gint *unseen,
2228                         guint32 *uid_validity)
2229 {
2230         gchar *real_path;
2231         gint ok;
2232         gint exists_, recent_, unseen_, uid_validity_;
2233
2234         if (!exists || !recent || !unseen || !uid_validity) {
2235                 if (session->mbox && strcmp(session->mbox, path) == 0)
2236                         return IMAP_SUCCESS;
2237                 exists = &exists_;
2238                 recent = &recent_;
2239                 unseen = &unseen_;
2240                 uid_validity = &uid_validity_;
2241         }
2242
2243         g_free(session->mbox);
2244         session->mbox = NULL;
2245
2246         real_path = imap_get_real_path(folder, path);
2247         ok = imap_cmd_select(SESSION(session)->sock, real_path,
2248                              exists, recent, unseen, uid_validity);
2249         if (ok != IMAP_SUCCESS)
2250                 log_warning(_("can't select folder: %s\n"), real_path);
2251         else
2252                 session->mbox = g_strdup(path);
2253         g_free(real_path);
2254
2255         return ok;
2256 }
2257
2258 #define THROW(err) { ok = err; goto catch; }
2259
2260 static gint imap_get_uid(IMAPSession *session, gint msgnum, guint32 *uid)
2261 {
2262         gint ok;
2263         GPtrArray *argbuf;
2264         gchar *str;
2265         gint num;
2266
2267         *uid = 0;
2268         argbuf = g_ptr_array_new();
2269
2270         imap_cmd_gen_send(SESSION(session)->sock, "FETCH %d (UID)", msgnum);
2271         if ((ok = imap_cmd_ok(SESSION(session)->sock, argbuf)) != IMAP_SUCCESS)
2272                 THROW(ok);
2273
2274         str = search_array_contain_str(argbuf, "FETCH");
2275         if (!str) THROW(IMAP_ERROR);
2276
2277         if (sscanf(str, "%d FETCH (UID %d)", &num, uid) != 2 ||
2278             num != msgnum) {
2279                 g_warning("imap_get_uid(): invalid FETCH line.\n");
2280                 THROW(IMAP_ERROR);
2281         }
2282
2283 catch:
2284         ptr_array_free_strings(argbuf);
2285         g_ptr_array_free(argbuf, TRUE);
2286
2287         return ok;
2288 }
2289
2290 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
2291                         const gchar *path,
2292                         gint *messages, gint *recent,
2293                         guint32 *uid_next, guint32 *uid_validity,
2294                         gint *unseen)
2295 {
2296         gchar *real_path;
2297         gchar *real_path_;
2298         gint ok;
2299         GPtrArray *argbuf;
2300         gchar *str;
2301
2302         *messages = *recent = *uid_next = *uid_validity = *unseen = 0;
2303
2304         argbuf = g_ptr_array_new();
2305
2306         real_path = imap_get_real_path(folder, path);
2307         QUOTE_IF_REQUIRED(real_path_, real_path);
2308         imap_cmd_gen_send(SESSION(session)->sock, "STATUS %s "
2309                           "(MESSAGES RECENT UIDNEXT UIDVALIDITY UNSEEN)",
2310                           real_path_);
2311
2312         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
2313         if (ok != IMAP_SUCCESS) THROW(ok);
2314
2315         str = search_array_str(argbuf, "STATUS");
2316         if (!str) THROW(IMAP_ERROR);
2317
2318         str = strchr(str, '(');
2319         if (!str) THROW(IMAP_ERROR);
2320         str++;
2321         while (*str != '\0' && *str != ')') {
2322                 while (*str == ' ') str++;
2323
2324                 if (!strncmp(str, "MESSAGES ", 9)) {
2325                         str += 9;
2326                         *messages = strtol(str, &str, 10);
2327                 } else if (!strncmp(str, "RECENT ", 7)) {
2328                         str += 7;
2329                         *recent = strtol(str, &str, 10);
2330                 } else if (!strncmp(str, "UIDNEXT ", 8)) {
2331                         str += 8;
2332                         *uid_next = strtoul(str, &str, 10);
2333                 } else if (!strncmp(str, "UIDVALIDITY ", 12)) {
2334                         str += 12;
2335                         *uid_validity = strtoul(str, &str, 10);
2336                 } else if (!strncmp(str, "UNSEEN ", 7)) {
2337                         str += 7;
2338                         *unseen = strtol(str, &str, 10);
2339                 } else {
2340                         g_warning("invalid STATUS response: %s\n", str);
2341                         break;
2342                 }
2343         }
2344
2345 catch:
2346         g_free(real_path);
2347         ptr_array_free_strings(argbuf);
2348         g_ptr_array_free(argbuf, TRUE);
2349
2350         return ok;
2351 }
2352
2353 #undef THROW
2354
2355
2356 /* low-level IMAP4rev1 commands */
2357
2358 static gint imap_cmd_login(SockInfo *sock,
2359                            const gchar *user, const gchar *pass)
2360 {
2361         gchar *user_, *pass_;
2362         gint ok;
2363
2364         QUOTE_IF_REQUIRED(user_, user);
2365         QUOTE_IF_REQUIRED(pass_, pass);
2366         imap_cmd_gen_send(sock, "LOGIN %s %s", user_, pass_);
2367
2368         ok = imap_cmd_ok(sock, NULL);
2369         if (ok != IMAP_SUCCESS)
2370                 log_warning(_("IMAP4 login failed.\n"));
2371
2372         return ok;
2373 }
2374
2375 static gint imap_cmd_logout(SockInfo *sock)
2376 {
2377         imap_cmd_gen_send(sock, "LOGOUT");
2378         return imap_cmd_ok(sock, NULL);
2379 }
2380
2381 /* Send a NOOP, and examine the server's response to see whether this
2382  * connection is pre-authenticated or not. */
2383 static gint imap_greeting(SockInfo *sock, gboolean *is_preauth)
2384 {
2385         GPtrArray *argbuf;
2386         gint r;
2387
2388         imap_cmd_gen_send(sock, "NOOP");
2389         argbuf = g_ptr_array_new(); /* will hold messages sent back */
2390         r = imap_cmd_ok(sock, argbuf);
2391         *is_preauth = search_array_starts(argbuf, "PREAUTH") != NULL;
2392
2393         return r;
2394 }
2395
2396 static gint imap_cmd_noop(SockInfo *sock)
2397 {
2398         imap_cmd_gen_send(sock, "NOOP");
2399         return imap_cmd_ok(sock, NULL);
2400 }
2401
2402 #define THROW(err) { ok = err; goto catch; }
2403
2404 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
2405 {
2406         gint ok;
2407         GPtrArray *argbuf;
2408         gchar *str;
2409
2410         argbuf = g_ptr_array_new();
2411
2412         imap_cmd_gen_send(sock, "NAMESPACE");
2413         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
2414
2415         str = search_array_str(argbuf, "NAMESPACE");
2416         if (!str) THROW(IMAP_ERROR);
2417
2418         *ns_str = g_strdup(str);
2419
2420 catch:
2421         ptr_array_free_strings(argbuf);
2422         g_ptr_array_free(argbuf, TRUE);
2423
2424         return ok;
2425 }
2426
2427 #undef THROW
2428
2429 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
2430                           const gchar *mailbox, GPtrArray *argbuf)
2431 {
2432         gchar *ref_, *mailbox_;
2433
2434         if (!ref) ref = "\"\"";
2435         if (!mailbox) mailbox = "\"\"";
2436
2437         QUOTE_IF_REQUIRED(ref_, ref);
2438         QUOTE_IF_REQUIRED(mailbox_, mailbox);
2439         imap_cmd_gen_send(sock, "LIST %s %s", ref_, mailbox_);
2440
2441         return imap_cmd_ok(sock, argbuf);
2442 }
2443
2444 #define THROW goto catch
2445
2446 static gint imap_cmd_do_select(SockInfo *sock, const gchar *folder,
2447                                gboolean examine,
2448                                gint *exists, gint *recent, gint *unseen,
2449                                guint32 *uid_validity)
2450 {
2451         gint ok;
2452         gchar *resp_str;
2453         GPtrArray *argbuf;
2454         gchar *select_cmd;
2455         gchar *folder_;
2456
2457         *exists = *recent = *unseen = *uid_validity = 0;
2458         argbuf = g_ptr_array_new();
2459
2460         if (examine)
2461                 select_cmd = "EXAMINE";
2462         else
2463                 select_cmd = "SELECT";
2464
2465         QUOTE_IF_REQUIRED(folder_, folder);
2466         imap_cmd_gen_send(sock, "%s %s", select_cmd, folder_);
2467
2468         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
2469
2470         resp_str = search_array_contain_str(argbuf, "EXISTS");
2471         if (resp_str) {
2472                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
2473                         g_warning("imap_cmd_select(): invalid EXISTS line.\n");
2474                         THROW;
2475                 }
2476         }
2477
2478         resp_str = search_array_contain_str(argbuf, "RECENT");
2479         if (resp_str) {
2480                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
2481                         g_warning("imap_cmd_select(): invalid RECENT line.\n");
2482                         THROW;
2483                 }
2484         }
2485
2486         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
2487         if (resp_str) {
2488                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
2489                     != 1) {
2490                         g_warning("imap_cmd_select(): invalid UIDVALIDITY line.\n");
2491                         THROW;
2492                 }
2493         }
2494
2495         resp_str = search_array_contain_str(argbuf, "UNSEEN");
2496         if (resp_str) {
2497                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
2498                         g_warning("imap_cmd_select(): invalid UNSEEN line.\n");
2499                         THROW;
2500                 }
2501         }
2502
2503 catch:
2504         ptr_array_free_strings(argbuf);
2505         g_ptr_array_free(argbuf, TRUE);
2506
2507         return ok;
2508 }
2509
2510 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
2511                             gint *exists, gint *recent, gint *unseen,
2512                             guint32 *uid_validity)
2513 {
2514         return imap_cmd_do_select(sock, folder, FALSE,
2515                                   exists, recent, unseen, uid_validity);
2516 }
2517
2518 static gint imap_cmd_examine(SockInfo *sock, const gchar *folder,
2519                              gint *exists, gint *recent, gint *unseen,
2520                              guint32 *uid_validity)
2521 {
2522         return imap_cmd_do_select(sock, folder, TRUE,
2523                                   exists, recent, unseen, uid_validity);
2524 }
2525
2526 #undef THROW
2527
2528 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
2529 {
2530         gchar *folder_;
2531
2532         QUOTE_IF_REQUIRED(folder_, folder);
2533         imap_cmd_gen_send(sock, "CREATE %s", folder_);
2534
2535         return imap_cmd_ok(sock, NULL);
2536 }
2537
2538 static gint imap_cmd_rename(SockInfo *sock, const gchar *old_folder,
2539                             const gchar *new_folder)
2540 {
2541         gchar *old_folder_, *new_folder_;
2542
2543         QUOTE_IF_REQUIRED(old_folder_, old_folder);
2544         QUOTE_IF_REQUIRED(new_folder_, new_folder);
2545         imap_cmd_gen_send(sock, "RENAME %s %s", old_folder_, new_folder_);
2546
2547         return imap_cmd_ok(sock, NULL);
2548 }
2549
2550 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
2551 {
2552         gchar *folder_;
2553
2554         QUOTE_IF_REQUIRED(folder_, folder);
2555         imap_cmd_gen_send(sock, "DELETE %s", folder_);
2556
2557         return imap_cmd_ok(sock, NULL);
2558 }
2559
2560 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
2561 {
2562         gint ok;
2563         gchar buf[IMAPBUFSIZE];
2564         gchar *cur_pos;
2565         gchar size_str[32];
2566         glong size_num;
2567
2568         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
2569
2570         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
2571
2572         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2573                == IMAP_SUCCESS) {
2574                 if (buf[0] != '*' || buf[1] != ' ')
2575                         return IMAP_ERROR;
2576                 if (strstr(buf, "FETCH") != NULL)
2577                         break;
2578         }
2579         if (ok != IMAP_SUCCESS)
2580                 return ok;
2581
2582         cur_pos = strchr(buf, '{');
2583         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2584         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
2585         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2586         size_num = atol(size_str);
2587
2588         if (*cur_pos != '\0') return IMAP_ERROR;
2589
2590         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
2591                 return IMAP_ERROR;
2592
2593         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
2594                 return IMAP_ERROR;
2595
2596         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')')
2597                 return IMAP_ERROR;
2598
2599         ok = imap_cmd_ok(sock, NULL);
2600
2601         return ok;
2602 }
2603
2604 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
2605                             const gchar *file)
2606 {
2607         gint ok;
2608         gint size;
2609         gchar *destfolder_;
2610         gchar buf[BUFFSIZE];
2611         FILE *fp;
2612
2613         g_return_val_if_fail(file != NULL, IMAP_ERROR);
2614
2615         size = get_file_size_as_crlf(file);
2616         if ((fp = fopen(file, "rb")) == NULL) {
2617                 FILE_OP_ERROR(file, "fopen");
2618                 return -1;
2619         }
2620         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2621         imap_cmd_gen_send(sock, "APPEND %s (\\Seen) {%d}", destfolder_, size);
2622
2623         ok = imap_cmd_gen_recv(sock, buf, sizeof(buf));
2624         if (ok != IMAP_SUCCESS || buf[0] != '+' || buf[1] != ' ') {
2625                 log_warning(_("can't append %s to %s\n"), file, destfolder_);
2626                 fclose(fp);
2627                 return IMAP_ERROR;
2628         }
2629
2630         log_print("IMAP4> %s\n", _("(sending file...)"));
2631
2632         while (fgets(buf, sizeof(buf), fp) != NULL) {
2633                 strretchomp(buf);
2634                 if (sock_puts(sock, buf) < 0) {
2635                         fclose(fp);
2636                         sock_close(sock);
2637                         return -1;
2638                 }
2639         }
2640
2641         if (ferror(fp)) {
2642                 FILE_OP_ERROR(file, "fgets");
2643                 fclose(fp);
2644                 sock_close(sock);
2645                 return -1;
2646         }
2647
2648         sock_puts(sock, "");
2649
2650         fclose(fp);
2651         return imap_cmd_ok(sock, NULL);
2652 }
2653
2654 static gint imap_cmd_copy(SockInfo *sock, guint32 uid, const gchar *destfolder)
2655 {
2656         gint ok;
2657         gchar *destfolder_;
2658
2659         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
2660
2661         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2662         imap_cmd_gen_send(sock, "UID COPY %d %s", uid, destfolder_);
2663
2664         ok = imap_cmd_ok(sock, NULL);
2665         if (ok != IMAP_SUCCESS) {
2666                 log_warning(_("can't copy %d to %s\n"), uid, destfolder_);
2667                 return -1;
2668         }
2669
2670         return ok;
2671 }
2672
2673 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
2674 {
2675         imap_cmd_gen_send
2676                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE ENVELOPE)",
2677                  first_uid, last_uid);
2678
2679         return IMAP_SUCCESS;
2680 }
2681
2682 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
2683                            gchar *sub_cmd)
2684 {
2685         gint ok;
2686
2687         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
2688                           first_uid, last_uid, sub_cmd);
2689
2690         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2691                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
2692                             first_uid, last_uid, sub_cmd);
2693                 return ok;
2694         }
2695
2696         return IMAP_SUCCESS;
2697 }
2698
2699 static gint imap_cmd_expunge(SockInfo *sock)
2700 {
2701         gint ok;
2702
2703         imap_cmd_gen_send(sock, "EXPUNGE");
2704         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2705                 log_warning(_("error while imap command: EXPUNGE\n"));
2706                 return ok;
2707         }
2708
2709         return IMAP_SUCCESS;
2710 }
2711
2712 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
2713 {
2714         gint ok;
2715         gchar buf[IMAPBUFSIZE];
2716         gint cmd_num;
2717         gchar cmd_status[IMAPBUFSIZE];
2718
2719         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2720                == IMAP_SUCCESS) {
2721                 if (buf[0] == '*' && buf[1] == ' ') {
2722                         if (argbuf)
2723                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
2724                         continue;
2725                 }
2726
2727                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
2728                         return IMAP_ERROR;
2729                 else if (cmd_num == imap_cmd_count &&
2730                          !strcmp(cmd_status, "OK")) {
2731                         if (argbuf)
2732                                 g_ptr_array_add(argbuf, g_strdup(buf));
2733                         return IMAP_SUCCESS;
2734                 } else
2735                         return IMAP_ERROR;
2736         }
2737
2738         return ok;
2739 }
2740
2741 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
2742 {
2743         gchar buf[IMAPBUFSIZE];
2744         gchar tmp[IMAPBUFSIZE];
2745         gchar *p;
2746         va_list args;
2747
2748         va_start(args, format);
2749         g_vsnprintf(tmp, sizeof(tmp), format, args);
2750         va_end(args);
2751
2752         imap_cmd_count++;
2753
2754         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
2755         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
2756                 *p = '\0';
2757                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
2758         } else
2759                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
2760
2761         sock_write(sock, buf, strlen(buf));
2762 }
2763
2764 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
2765 {
2766         if (sock_gets(sock, buf, size) == -1)
2767                 return IMAP_SOCKET;
2768
2769         strretchomp(buf);
2770
2771         log_print("IMAP4< %s\n", buf);
2772
2773         return IMAP_SUCCESS;
2774 }
2775
2776
2777 /* misc utility functions */
2778
2779 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
2780 {
2781         gchar *tmp;
2782
2783         dest[0] = '\0';
2784         tmp = strchr(src, ch);
2785         if (!tmp)
2786                 return NULL;
2787
2788         memcpy(dest, src, MIN(tmp - src, len - 1));
2789         dest[MIN(tmp - src, len - 1)] = '\0';
2790
2791         return tmp + 1;
2792 }
2793
2794 static gchar *get_quoted(const gchar *src, gchar ch, gchar *dest, gint len)
2795 {
2796         const gchar *p = src;
2797         gint n = 0;
2798
2799         g_return_val_if_fail(*p == ch, NULL);
2800
2801         *dest = '\0';
2802         p++;
2803
2804         while (*p != '\0' && *p != ch) {
2805                 if (n < len - 1) {
2806                         if (*p == '\\' && *(p + 1) != '\0')
2807                                 p++;
2808                         *dest++ = *p++;
2809                 } else
2810                         p++;
2811                 n++;
2812         }
2813
2814         *dest = '\0';
2815         return (gchar *)(*p == ch ? p + 1 : p);
2816 }
2817
2818 static gchar *search_array_starts(GPtrArray *array, const gchar *str)
2819 {
2820         gint i;
2821         size_t len;
2822
2823         g_return_val_if_fail(str != NULL, NULL);
2824         len = strlen(str);
2825         for (i = 0; i < array->len; i++) {
2826                 gchar *tmp;
2827                 tmp = g_ptr_array_index(array, i);
2828                 if (strncmp(tmp, str, len) == 0)
2829                         return tmp;
2830         }
2831         return NULL;
2832 }
2833
2834 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
2835 {
2836         gint i;
2837
2838         for (i = 0; i < array->len; i++) {
2839                 gchar *tmp;
2840
2841                 tmp = g_ptr_array_index(array, i);
2842                 if (strstr(tmp, str) != NULL)
2843                         return tmp;
2844         }
2845
2846         return NULL;
2847 }
2848
2849 static gchar *search_array_str(GPtrArray *array, gchar *str)
2850 {
2851         gint i;
2852         gint len;
2853
2854         len = strlen(str);
2855
2856         for (i = 0; i < array->len; i++) {
2857                 gchar *tmp;
2858
2859                 tmp = g_ptr_array_index(array, i);
2860                 if (!strncmp(tmp, str, len))
2861                         return tmp;
2862         }
2863
2864         return NULL;
2865 }
2866
2867 static void imap_path_separator_subst(gchar *str, gchar separator)
2868 {
2869         gchar *p;
2870         gboolean in_escape = FALSE;
2871
2872         if (!separator || separator == '/') return;
2873
2874         for (p = str; *p != '\0'; p++) {
2875                 if (*p == '/' && !in_escape)
2876                         *p = separator;
2877                 else if (*p == '&' && *(p + 1) != '-' && !in_escape)
2878                         in_escape = TRUE;
2879                 else if (*p == '-' && in_escape)
2880                         in_escape = FALSE;
2881         }
2882 }
2883
2884 static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
2885 {
2886 #if !HAVE_LIBJCONV
2887         return g_strdup(mutf7_str);
2888 #else
2889         static iconv_t cd = (iconv_t)-1;
2890         static gboolean iconv_ok = TRUE;
2891         GString *norm_utf7;
2892         gchar *norm_utf7_p;
2893         size_t norm_utf7_len;
2894         const gchar *p;
2895         gchar *to_str, *to_p;
2896         size_t to_len;
2897         gboolean in_escape = FALSE;
2898
2899         if (!iconv_ok) return g_strdup(mutf7_str);
2900
2901         if (cd == (iconv_t)-1) {
2902                 cd = iconv_open(conv_get_current_charset_str(), "UTF-7");
2903                 if (cd == (iconv_t)-1) {
2904                         g_warning(_("iconv cannot convert UTF-7 to %s\n"),
2905                                   conv_get_current_charset_str());
2906                         iconv_ok = FALSE;
2907                         return g_strdup(mutf7_str);
2908                 }
2909         }
2910
2911         norm_utf7 = g_string_new(NULL);
2912
2913         for (p = mutf7_str; *p != '\0'; p++) {
2914                 /* replace: '&'  -> '+',
2915                             "&-" -> '&',
2916                             escaped ','  -> '/' */
2917                 if (!in_escape && *p == '&') {
2918                         if (*(p + 1) != '-') {
2919                                 g_string_append_c(norm_utf7, '+');
2920                                 in_escape = TRUE;
2921                         } else {
2922                                 g_string_append_c(norm_utf7, '&');
2923                                 p++;
2924                         }
2925                 } else if (in_escape && *p == ',') {
2926                         g_string_append_c(norm_utf7, '/');
2927                 } else if (in_escape && *p == '-') {
2928                         g_string_append_c(norm_utf7, '-');
2929                         in_escape = FALSE;
2930                 } else {
2931                         g_string_append_c(norm_utf7, *p);
2932                 }
2933         }
2934
2935         norm_utf7_p = norm_utf7->str;
2936         norm_utf7_len = norm_utf7->len;
2937         to_len = strlen(mutf7_str) * 5;
2938         to_p = to_str = g_malloc(to_len + 1);
2939
2940         if (iconv(cd, &norm_utf7_p, &norm_utf7_len, &to_p, &to_len) == -1) {
2941                 g_warning(_("iconv cannot convert UTF-7 to %s\n"),
2942                           conv_get_current_charset_str());
2943                 g_string_free(norm_utf7, TRUE);
2944                 g_free(to_str);
2945                 return g_strdup(mutf7_str);
2946         }
2947
2948         /* second iconv() call for flushing */
2949         iconv(cd, NULL, NULL, &to_p, &to_len);
2950         g_string_free(norm_utf7, TRUE);
2951         *to_p = '\0';
2952
2953         return to_str;
2954 #endif /* !HAVE_LIBJCONV */
2955 }
2956
2957 static gchar *imap_locale_to_modified_utf7(const gchar *from)
2958 {
2959 #if !HAVE_LIBJCONV
2960         return g_strdup(from);
2961 #else
2962         static iconv_t cd = (iconv_t)-1;
2963         static gboolean iconv_ok = TRUE;
2964         gchar *norm_utf7, *norm_utf7_p;
2965         size_t from_len, norm_utf7_len;
2966         GString *to_str;
2967         gchar *from_tmp, *to, *p;
2968         gboolean in_escape = FALSE;
2969
2970         if (!iconv_ok) return g_strdup(from);
2971
2972         if (cd == (iconv_t)-1) {
2973                 cd = iconv_open("UTF-7", conv_get_current_charset_str());
2974                 if (cd == (iconv_t)-1) {
2975                         g_warning(_("iconv cannot convert %s to UTF-7\n"),
2976                                   conv_get_current_charset_str());
2977                         iconv_ok = FALSE;
2978                         return g_strdup(from);
2979                 }
2980         }
2981
2982         Xstrdup_a(from_tmp, from, return g_strdup(from));
2983         from_len = strlen(from);
2984         norm_utf7_len = from_len * 5;
2985         Xalloca(norm_utf7, norm_utf7_len + 1, return g_strdup(from));
2986         norm_utf7_p = norm_utf7;
2987
2988 #define IS_PRINT(ch) (isprint(ch) && isascii(ch))
2989
2990         while (from_len > 0) {
2991                 if (IS_PRINT(*from_tmp)) {
2992                         /* printable ascii char */
2993                         *norm_utf7_p = *from_tmp;
2994                         norm_utf7_p++;
2995                         from_tmp++;
2996                         from_len--;
2997                 } else {
2998                         size_t mblen;
2999
3000                         /* unprintable char: convert to UTF-7 */
3001                         for (mblen = 0;
3002                              !IS_PRINT(from_tmp[mblen]) && mblen < from_len;
3003                              mblen++)
3004                                 ;
3005                         from_len -= mblen;
3006                         if (iconv(cd, &from_tmp, &mblen,
3007                                   &norm_utf7_p, &norm_utf7_len) == -1) {
3008                                 g_warning(_("iconv cannot convert %s to UTF-7\n"),
3009                                           conv_get_current_charset_str());
3010                                 return g_strdup(from);
3011                         }
3012
3013                         /* second iconv() call for flushing */
3014                         iconv(cd, NULL, NULL, &norm_utf7_p, &norm_utf7_len);
3015                 }
3016         }
3017
3018 #undef IS_PRINT
3019
3020         *norm_utf7_p = '\0';
3021         to_str = g_string_new(NULL);
3022         for (p = norm_utf7; p < norm_utf7_p; p++) {
3023                 /* replace: '&' -> "&-",
3024                             '+' -> '&',
3025                             escaped '/' -> ',' */
3026                 if (!in_escape && *p == '&') {
3027                         g_string_append(to_str, "&-");
3028                 } else if (!in_escape && *p == '+') {
3029                         g_string_append_c(to_str, '&');
3030                         in_escape = TRUE;
3031                 } else if (in_escape && *p == '/') {
3032                         g_string_append_c(to_str, ',');
3033                 } else if (in_escape && *p == '-') {
3034                         in_escape = FALSE;
3035                         g_string_append_c(to_str, '-');
3036                 } else {
3037                         g_string_append_c(to_str, *p);
3038                 }
3039         }
3040
3041         if (in_escape) {
3042                 in_escape = FALSE;
3043                 g_string_append_c(to_str, '-');
3044         }
3045
3046         to = to_str->str;
3047         g_string_free(to_str, FALSE);
3048
3049         return to;
3050 #endif
3051 }
3052
3053 static gboolean imap_rename_folder_func(GNode *node, gpointer data)
3054 {
3055         FolderItem *item = node->data;
3056         gchar **paths = data;
3057         const gchar *oldpath = paths[0];
3058         const gchar *newpath = paths[1];
3059         gchar *base;
3060         gchar *new_itempath;
3061         gint oldpathlen;
3062
3063         oldpathlen = strlen(oldpath);
3064         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
3065                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
3066                 return TRUE;
3067         }
3068
3069         base = item->path + oldpathlen;
3070         while (*base == G_DIR_SEPARATOR) base++;
3071         if (*base == '\0')
3072                 new_itempath = g_strdup(newpath);
3073         else
3074                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
3075                                            NULL);
3076         g_free(item->path);
3077         item->path = new_itempath;
3078
3079         return FALSE;
3080 }